Anti-Gravity Wheel Explained

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  • เผยแพร่เมื่อ 3 มิ.ย. 2024
  • It's a little shaky but if you average out the oscillations I think the result is clear. Again, huge thank you's to A/Prof Emeritus Rod Cross, Helen Georgiou, Alex Yeung, and Chris Stewart, Tom Gordon, the University of Sydney Mechanical Engineering shop, Duncan and co. Ralph and the School of Physics.

ความคิดเห็น • 4.3K

  • @SueMead
    @SueMead 8 ปีที่แล้ว +1635

    This. This is how you get kids interested in science, engineering, mathematics. Something that you hear some kids say is that maths or science isn't relevant to them. Or, worse still, they've heard their parents say that it's useless for getting them a job. It is real world demonstrations such as this that inspire and arouse interest. Good stuff.

    • @computer5272
      @computer5272 8 ปีที่แล้ว +17

      +Sue Mead Well they're not wrong, it is useless in getting a job.

    • @xxxBradTxxx
      @xxxBradTxxx 8 ปีที่แล้ว +64

      +Computer
      Engineering is a job...

    • @topraksen7111
      @topraksen7111 8 ปีที่แล้ว +5

      +Brad exactly lol thats what he means

    • @joeeeee256
      @joeeeee256 8 ปีที่แล้ว +3

      +Sue Mead I agree.

    • @Hurricane50
      @Hurricane50 7 ปีที่แล้ว +33

      I think intelligence isn't purely decided by who you are when you are born, but also by the environment you are brought up in. Of course how you are born does affect your intelligence, for example if you have a better memory then you will likely do better in tests, but your parents can greatly influence your intelligence. Inspiration can act like a parent does, and lead to someone becoming a more intelligent individual, therefore I think videos like this are fundamental in creating an intelligent person who lacks parents who could do it instead.

  • @dansanger5340
    @dansanger5340 9 ปีที่แล้ว +520

    The reason it's easier is because he's in Australia and therefore hanging upside-down by his feet. Also, they use the metric system, and everyone knows that 19 is less than 42. Not to mention that 42 is the answer to the ultimate question about life, the universe, and everything.

    • @John-pp6xy
      @John-pp6xy 9 ปีที่แล้ว +61

      Well 9-2=7 42 divided by 7 = 6. 6-3=3. 3 is how many sides are on a triangle. illuminati confirmed

    • @mickelodiansurname9578
      @mickelodiansurname9578 9 ปีที่แล้ว +3

      lol.... I also seen him sneak tinkerbell under his shirt.... now she can't lift a grown adult man....but she can lift him a little.... Since J.M. Barries death many of his fictional characters have had to find work where they can.... its very sad.

    • @liammcmillen-meyers2113
      @liammcmillen-meyers2113 9 ปีที่แล้ว +1

      Hmmmm, okay seems legit

    • @PH5221
      @PH5221 9 ปีที่แล้ว +10

      In relation to the Universe, we're neither upside-down or the right way around. There is no frame of reference in space.

    • @ogenmatic
      @ogenmatic 9 ปีที่แล้ว

      They don't even know that it's winter in January down in Australia.
      42? Are you sure? I always thought it was 107...

  • @Knobulon
    @Knobulon 3 ปีที่แล้ว +140

    Veritasium, providing answers to questions I never knew existed

  • @captb6197
    @captb6197 5 ปีที่แล้ว +871

    Pure magic, I can even see Hogwarts in the background

    • @lebenstraum666
      @lebenstraum666 4 ปีที่แล้ว +10

      @@jack_woodman Sydney Uni? Hogwarts! Much the same really.

    • @prateekpanwar646
      @prateekpanwar646 3 ปีที่แล้ว +10

      Someone would be chanting wingardium leviosa

    • @discreet_boson
      @discreet_boson 3 ปีที่แล้ว

      @@jack_woodman r/wooosh

    • @discreet_boson
      @discreet_boson 3 ปีที่แล้ว

      @@jack_woodman oh OK thanks then

    • @sharmarkp2899
      @sharmarkp2899 3 ปีที่แล้ว

      Same here

  • @FlightChops
    @FlightChops 10 ปีที่แล้ว +490

    Love this experiment.
    As a pilot I have really needed to wrap my head around gyroscopic precession as related to my instruments, but this illustration gives a new and simpler context to the same phenomenon.

    • @oliverlane9716
      @oliverlane9716 10 ปีที่แล้ว +3

      Yeah same here I am a merchant Seaman so need a very good understanding of Gyroscopic properties and that this is certainly a far more interesting way of demonstrating.

    • @DerPilotMann
      @DerPilotMann 10 ปีที่แล้ว +4

      From one pilot to another, I feel your pain! Excellent explanation in this video, it certainly does help explain gyroscopes.

    • @DerPilotMann
      @DerPilotMann 10 ปีที่แล้ว +1

      *****
      Yup, all the chemtrails. /sarcasm

    • @peterellison2220
      @peterellison2220 3 ปีที่แล้ว +1

      Nice to see you here! Love Veritasium

    • @davidfisher3684
      @davidfisher3684 3 ปีที่แล้ว +1

      Really? Most pilots do not even know why their aircraft fly. The Bernoulli explanation is known to be unphysical nonsense.

  • @korlumchukhu5483
    @korlumchukhu5483 9 ปีที่แล้ว +1033

    know i get it...thor`s hammer has built in gyroscope and finger print scanner in its handles ...so it activates the gyroscope when thor holds it ,....

    • @SimonKelk
      @SimonKelk 9 ปีที่แล้ว +17

      korlum chukhu I was thinking the same thing. A drill in the handle and a huge wheel inside the hammer. :)

    • @korlumchukhu5483
      @korlumchukhu5483 9 ปีที่แล้ว +7

      Simon Kelk haahahahahahhahahahahahahahahahha yes

    • @Flavian1
      @Flavian1 9 ปีที่แล้ว +5

      korlum chukhu damn it, I thought the exact same thing the second he held up the damn gyroscop

    • @simeon91ruse
      @simeon91ruse 9 ปีที่แล้ว +1

      korlum chukhu though the same when i was watching this :D

    • @korlumchukhu5483
      @korlumchukhu5483 9 ปีที่แล้ว +9

      got to ask thors fathers blacksmith ..whats exactly in there ...lol

  • @freddyrosenberg9288
    @freddyrosenberg9288 5 ปีที่แล้ว +113

    I want to see this experiment done with one flywheel on each end. Spin them in the same direction and spin them in opposite directions. That would be nice to see.

    • @hugorodriguez1585
      @hugorodriguez1585 4 ปีที่แล้ว +6

      I want to see this experiment done with one flywheel on each end. Spin them in the same direction and spin them in opposite directions. That would be nice to see.hat would be nice to see. Thanks maxbored

    • @LetsMars
      @LetsMars ปีที่แล้ว +6

      Yes. Make two of those, and then attach the axle of both wheel sets to a rigid body.
      Flying Car

    • @OfMoachAndMayhem
      @OfMoachAndMayhem 3 หลายเดือนก่อน

      There's a video on YT of a guy who does that, and it turns out the gyro forces cancel out and it behaves like there are no spinning parts

    • @dialecticalmonist3405
      @dialecticalmonist3405 3 หลายเดือนก่อน

      Imagine twirling a string and then spinning in a circle, just like they are doing here.
      Does the string fall? No. It just creates a swirling pattern as you spin around. Understanding why, is very similar to understanding why the wheel doesn't fall.
      This "swirling action" is at high rpm and takes place within the molecules of the steel bar, so it seems invisible.

  • @Stone815
    @Stone815 3 ปีที่แล้ว +86

    There's a VR sword/handle glove thing that uses spinning motors to adjust torque to make you feel like you're holding a heavy sword or hammer. You should do a video on that.

    • @dpcubing1521
      @dpcubing1521 2 ปีที่แล้ว +8

      thats cool

    • @jakelodwick
      @jakelodwick 2 ปีที่แล้ว +5

      I would simply buy a real sword, and go around using it. Skip the VR.

    • @jennyaguirre5613
      @jennyaguirre5613 ปีที่แล้ว +1

      @@jakelodwick wait, what would you use it for in real life :o ?

    • @johnyguacamole2878
      @johnyguacamole2878 ปีที่แล้ว +1

      @@jennyaguirre5613 real life hay dummy cutting

    • @Tayleigh1Fan
      @Tayleigh1Fan ปีที่แล้ว

      @@jakelodwick using it on people

  • @RedDevil2557
    @RedDevil2557 9 ปีที่แล้ว +100

    Feels satisfied that you have chosen the right one

    • @Stormsolid
      @Stormsolid 9 ปีที่แล้ว +34

      RedDevilus I choose the right one but I tested what happen when pressing the other buttons... they all end up on this video :D

    • @RedHairdo
      @RedHairdo 8 ปีที่แล้ว

      RedDevilus But for the right reasons?

    • @bradley5819
      @bradley5819 5 ปีที่แล้ว

      Gina??

    • @kolinevans9127
      @kolinevans9127 4 ปีที่แล้ว

      I feel like I’ve chosen all of them.

  • @fastberry1162
    @fastberry1162 9 ปีที่แล้ว +2537

    I'll just pretend that I understand this.

    • @TonboIV
      @TonboIV 8 ปีที่แล้ว +70

      ***** I never understood gyroscopic precession, then I played Kerbal Space Program and tried to change my orbital inclination...
      oh, that makes sense.

    • @solaaar3
      @solaaar3 8 ปีที่แล้ว

      +Abey Babu hahahaah same thing

    • @jonaslangester7334
      @jonaslangester7334 7 ปีที่แล้ว +2

      So that we can feel smart xD

    • @jonathanyang2359
      @jonathanyang2359 7 ปีที่แล้ว +10

      Its all about internal force. If we define the system to be the man-scale system, we can see that the internal forces balance out because there is not net force acting on the system. However, although the net internal force sums to 0, it doesn't mean that the internal forces are 0. The higher the angular momentum the gyroscope, the less internal force we have to provide ourselves to the system. As a result, the overall weight is the same. However, if we let the gyroscope accelerate upwards/downwards, we will see small changes in the scale reading because there is now a net external force acting on the system. This is why the scale reading fluctuates.

    • @christianhim
      @christianhim 7 ปีที่แล้ว +10

      Why spinning cancels out the net torque?

  • @RWBHere
    @RWBHere 5 ปีที่แล้ว +46

    Just to add to the explanation: The gyroscope only feels lighter, because angular rotation is being converted to precession, and at certain times to vertical movement within the system. The system being the flywheel, the man, potential energy, kinetic energy and the ground. His arm does less work in raising the gyroscope, but he does more work in rotating himself, effectively increasing the rate of precession, and transferring energy to and from the flywheel. His total energy expenditure, plus the energies transferring to and from the flywheel rotation, are exactly the same as the energy used in simply lifting a stationary mass of 19 kg, but _different muscles are being used_ to accomplish the task.
    As he rotates himself faster, lifting the flywheel, the _total_ rotational speed of the flywheel increases by an amount equal to his rotation about the vertical axis plus the rotational speed of the flywheel.
    (Edit: To explain the next sentences, in a frictionless system, the flywheel would gain rotational speed in proportion to the man's rotational speed - every turn he makes is one extra turn to the flywheel, and as he slows down, the flywheel slows down by that much. In practice, the flywheel slows all of the time, because of friction but less so as he turns himself faster.)
    Energy is thus transferred via his work in rotating himself plus the gyroscope. When he lowers the gyroscope, his rotational speed reduces, as does the speed of rotation of the flywheel. Energy is being transferred back from the flywheel. The residual precession, as he holds the gyroscope horizontally, represents the losses through friction, as the flywheel slows down. That's why a fixed gyroscope will gradually lower its shaft's free end to horizontal and below, until it strikes an object, and then transfers its remaining rotational energy to the obstruction, through noise, heat, and the disturbance of the momentum of the object. It sometimes runs away across a surface, or even shatters itself, whilst giving up that energy.
    The two measured weight displacements on the scale are the peak points during which energies are being transferred. It can be seen from the graph that the increase in measured weight x the area under the curve and the 'neutral point is approximately equal and opposite to the area above the curve x the measured weight. (The discrepancy is mainly due to the man working to adapt to the changing forces between his arms and the gyroscope, and to friction.) Thus no net 'lifting force' results, and the laws momentum / thermodynamics are satisfied. In fact, if anything, the larger increase in measured weight than the measured decrease, proves that, if anything, energy is lost, and no net 'lift' has occurred.
    Unfortunately, Professor Laithwaite had misunderstood what he was saying. Sadly, he lost his job, after losing credibility because of that error and he died with a somewhat unbalanced mind, in many peoples' estimation. In other respects, the Professor was a brilliant man, and people tend to forget that fact, because mistakes are much easier to sensationalise.

    • @dcamron46
      @dcamron46 2 ปีที่แล้ว +3

      One other thing I think makes it feels lighter which Derek seemed to try to allude to. If you try lift the awkward weight with nothing spinning it’s not as easy as the rotating system, because you don’t need to balance the bar in your hand, you don’t need to apply torque to stop it rocking back and forth, it feels like a balanced weight as long as you move your arm with it. I guess that’s similar to what you said, I realize my comment isn’t concise or technical but I’m saying it’s easier to hold weight which doesn’t need stabilization, the same mass but with a short length is unforgiving to slight shakiness and it feels heavier when it’s not

    • @myepraco7741
      @myepraco7741 2 ปีที่แล้ว

      @@dcamron46 you just replies to 3y ago comment 😂❤️

    • @LanTHruster
      @LanTHruster ปีที่แล้ว

      Looks incomplete to me, the machine on the scales at the end of this video contradicts to this analysis

    • @justlookingaround9834
      @justlookingaround9834 ปีที่แล้ว +2

      He didn’t die with an unbalanced mind and was, I think, still working when he died on a system to launch objects vertically using the linear motor rails as used in the mag lift trains. He was a very nice chap with a great interest in butterflies.

    • @fallenstard
      @fallenstard ปีที่แล้ว +1

      This is the explanation I needed that was missing from the video. Thank you!

  • @tharxis3803
    @tharxis3803 5 ปีที่แล้ว +35

    It's actually funny how this professor's surname is so similar to the word Lightweight.

  • @RimstarOrg
    @RimstarOrg 10 ปีที่แล้ว +111

    A while back I made a small one and sat it on a digital scale like you guys did here. Zero weight change. And yet placing a playing card on the scale at the same time did show a change. I recall the pleasure I felt seeing that all of the relevant experimental science done in the past held up so beautifully. You gotta love reality's consistency. Kudos for doing this.

    • @nixego
      @nixego 10 ปีที่แล้ว +3

      You should've tried to shuffle your feet and rotated your body with the flywheel above your head to keep it in the air longer (if you could). Longer airtime would've been more badass!

    • @elrojoJazz
      @elrojoJazz 10 ปีที่แล้ว +1

      Nixego ah yes!... rotate or spin your self with the gyroscopic force to make it seem like you could hold it over your head for like 5min or so... would look pretty impressive! great idea

    • @oldskoolhead0
      @oldskoolhead0 6 ปีที่แล้ว

      untill it slips and gets buried in the camera mans face of course ;-)

    • @error.418
      @error.418 3 ปีที่แล้ว

      @Be Informed Wow, strong argument, you really got him. Great evidence of nothing.

    • @error.418
      @error.418 3 ปีที่แล้ว

      @Be Informed Theism is as far from the truth as you can get.

  • @FMN-Music
    @FMN-Music 10 ปีที่แล้ว +71

    wow, I totally thought, it would show lighter, because the scale to my knowledge does not weigh mass, it measures force instead. The mass had to stay the same, but the force down to earth could ´ve changed... Obviously I was wrong.

  • @timearl399
    @timearl399 2 ปีที่แล้ว +26

    1. The weight is still the same when spinning but you can now lift it, you haven’t explained that.
    2. You brought it down again as soon as it reached the top (arm’s length). Fix a swivel to the handle and then see if you can keep it above your head.
    3. You’ve said that the spinning causes the torque, but you haven’t explained how.
    4. The tendency (for the shaft) to rotate, and the tendency to rise are two different things. They are related, though, you can’t lift the spinning wheel unless you rotate it around yourself. Why?
    5. The wheel is uniform in all directions, so why is the turning force directional, and what determines the direction it takes? (If you spin the wheel the other way does it reverse?
    6. Attach the shaft to a rig with sensors to measure the size and direction of the forces created.

    • @RobertSanz1
      @RobertSanz1 2 ปีที่แล้ว +2

      a man of science. asking the next questions 🤟

    • @csm8203
      @csm8203 2 ปีที่แล้ว +2

      1. Its weight being the same is correct. But since it's spinning, you don't need to have a counterweight at the to balance out the weight the two ends of the pole. This was explained by using gyroscopic precession. It is like dividing the mass of the metal into 2 so that half of its mass is at both ends of the pole cancelling the torque of the pole due to gravity. You can see it if you try to lift a dumbbell with a two 2kg metals at each side or a dumbbell with 4kg only on 1 side. Even if the mass are the same, it is much easier to lift the one with 2 metals at each side than the latter. Also, it can also be explained by inertia. The motion of the metal makes it hard for gravity to act upon it.
      2. Your suggestion is very witty and good. You can actually keep it as long as the rotation is enough to prevent it to fall down from your head. But I mean, you literally have a giant metal being hold by a shaft and by rotational motion. Even I wouldn't want to have that thing above my head in case some extraneous variables affect the experiment that would cause me my head. He's in the street and there's not telling what might happen there.
      3. That's the definition of torque. It is just a force that cause other objects to rotate. Since it is spinning, it is continuously rotating. But I don't know which torque are you talking about since there is also a torque when metal isn't spinning. The torque is the force that is applied by the mass and gravity to the rod that causes it to tilt since it has an unbalanced weight just like what I said at no. 1. If there are 2 weights at the end, there would be no torque when the metal isn't spinning. And maybe the the thing your asking at no. 1 can be explained by this because even if you spin one end of the metal with two weights at each end, they wouldn't lighter.
      4. The shaft is a solid rigid object. The rotation of the object upwards would also be the same downwards. For a second thought, I think this isn't what you mean but the rotation of the object in the horizontal direction and the tendency of the shaft to rise in the vertical direction. Then your answer is justified since it is answered in the video. He actually put a force at the end of the pole near the spinning metal. That is why it look like he was able to lift it with one hand, but he actually used forces from 2 of his hands to lift the shaft.
      5. It can also be explained by gyroscopic precession. The rotation cancels out the torque from the one end without the metal just like at no. 1. If you actually have a machine that can lift that thing with or without the spin, just like you have said it would have the same reading. Like at the end of the video where a small gyroscope at an electrical weighing scale. The readings at the start is actually just caused by the acceleration of the gravity applied to the shaft and metal when he fails to properly hold the shaft. That is why I suggested the use of machine in the experiment since a machine would read the same force all throughout the experiment. You know, like how you kick the surface of a weighing scale. It would suddenly increase but then goes back to normal.
      6. That is also a good suggestion and I think the assumption that the weight is the same whether it spins or not is true. In the end of the video, it just says that the spins only affects the "apparent" weight of the object and not actually the real weight. It just happen that he cannot maintain a proper posture for the spin and he fixes it by applying a force on the surface of the weighing scale. Remember, the weighing scale at the beginning of the video uses springs. At first, it went down since he doesn't counteract the force of gravity. He let the gravity do the work, since it is easier that way to put down an object. But then he tried to not let it fall and hit the concrete. He used his hand to exert an upward force to the metal. Isaac's 3rd law that opposite forces causes an equal reaction and opposite direction. The metal is also applying a force from the gravity. Hence the second reading after decrease was an increase. He let go of the metal not being read by the weighing scale. Then he tried to grab on to it making the force of gravity acted on the weighing scale.

    • @csm8203
      @csm8203 2 ปีที่แล้ว +1

      You're question are actually really smart like 6 where using sensors to monitor the force. The experiment was taken by an average man that has an average build. If he were also to support the weight of the shaft while letting it down, there wouldn't be a discrepancy of a sudden down and up trend on the weighing scale.

    • @csm8203
      @csm8203 2 ปีที่แล้ว +1

      And also, I forgot to say but the direction of the metal spinning doesn't affect the direction of the rotation of the spin. It is the force applied by the guy in the video near the metal here at 2:25. That is why it spins clockwise since he also exerted an extra force of the clockwise direction.

    • @KRONIIKOGGaming
      @KRONIIKOGGaming 2 ปีที่แล้ว

      and the little gyroscope at the end is on a static setup so it cant move freely like when he was out on the grass fake as science

  • @johncuzzourt2118
    @johncuzzourt2118 5 ปีที่แล้ว +8

    I love it when something on TH-cam is based on scientifically demonstrable facts and leads to a better understanding of our experiences. Thanks for making this video!

  • @OHMyResistance
    @OHMyResistance 9 ปีที่แล้ว +493

    so basically put another wheel on the other end of the bar and spin that as well and break the universe

    • @cristiansandica1410
      @cristiansandica1410 9 ปีที่แล้ว +56

      If the other wheel spins the opposite way the angular momentum of the system is =0, so the system would 'feel' as heavy as if there were no wheels spinning. That is, if you hold it from the center of the pole. If you hold it from any other point, it will probably start spinning as shown in the video.

    • @paracite187
      @paracite187 9 ปีที่แล้ว +6

      Cristian Sandica
      But what would happen if you were turn 2 wheels at the same end of the rod? I mean 2 wheels would rotate in the opposite way?

    • @paracite187
      @paracite187 9 ปีที่แล้ว +3

      Paranoia And what would happen if you were turn 2 wheels not at the same end of the rod, the second is mounted on an axle on the first wheel?

    • @qasw1234
      @qasw1234 9 ปีที่แล้ว +2

      Paranoia if you put two wheels of equal mass rotating at equal speeds going opposite directions then they would simply cancel each other out. Think of those toy helicopters with the two sets of blades.]
      I dont understand what you mean by the second one.

    • @kriptonis
      @kriptonis 9 ปีที่แล้ว +1

      ***** the 2 sets of blades in the helicopter (toy or real) are exactly used to cancel the rotation so that the helicopter is easy to fly. Another mechanism to do just the same is the tail rotor in traditional helicopters or using 2 separate blades rotating in opposite directions like the Chinook heli.

  • @2DHouse
    @2DHouse 10 ปีที่แล้ว +65

    really loved this one!, thanks!

  • @louis-guillaumebossu8868
    @louis-guillaumebossu8868 6 ปีที่แล้ว

    Very nice video, very well explained. Much better than others I have seen on this subject !

  • @kihsuokadwog4250
    @kihsuokadwog4250 3 ปีที่แล้ว

    You have come far from here... Lots of love.
    ..keep us Informed... Knowledge is DEVINE

  • @AlanKey86
    @AlanKey86 10 ปีที่แล้ว +107

    Another superb video Derek that really got me thinking!
    I'm showing this to my physics students at college!

    • @Viktormajstor
      @Viktormajstor 10 ปีที่แล้ว +1

      This is relatively simple given that you're a professor at a college...

    • @shindoutube
      @shindoutube 10 ปีที่แล้ว +2

      the beauty is in the simplicity

    • @ksarnek
      @ksarnek 10 ปีที่แล้ว +13

      Darkill Vix Fully (and quantitatively) describing the physics of a gyroscope is not trivial at all. As a university physics student I can assure you it's one of the most complicated and (at first) counterintuitive problems you face in a classical mechanics course, so showing this video to students could be very helpful, especially if the class doesn't have access to a gyroscope to perform a demontration.

    • @shindoutube
      @shindoutube 10 ปีที่แล้ว +1

      This video is great not necessarily because it gives facts and teaches university students, but it's job is to incite wander and curiosity for those students having them be more interested in what they are learning.

    • @mireyajones810
      @mireyajones810 3 หลายเดือนก่อน

      Dear Alan, you need to show the original Laithwaite 1974 video. The spinning gyro negates forces pushing toward the center of the earth. Hence, he hung a stand weighing about 8kg off the edge of a table, but it would not fall off - so long as the gyro was spinning.

  • @TheSecondVersion
    @TheSecondVersion 7 ปีที่แล้ว +415

    It's kinda telling that this explanation video only has 1/15 the views of the first one.

    • @ericli2475
      @ericli2475 7 ปีที่แล้ว +8

      1/10*

    • @fixed1t
      @fixed1t 5 ปีที่แล้ว +56

      Thats because this video should have been called Part 2 I had to do a search to find it. Whatever it is its still bloody weird to see such an old guy gentle swinging it about his head, I'd love to see this replicated on the space station at zero G that would be informative.

    • @joseinfante5054
      @joseinfante5054 4 ปีที่แล้ว +2

      @@fixed1t Nothing will happen, this is a gyroscope, a stabilizer, nothing to do with gravity. and gravity does not exist, it is the Aether subatomic particle pushing towards the earth's magnetic

    • @error.418
      @error.418 3 ปีที่แล้ว +15

      @@joseinfante5054 There is no "Aether" subatomic particle... Are you trying to talk about the Higgs field and getting confused?

    • @joseinfante5054
      @joseinfante5054 3 ปีที่แล้ว +2

      @@error.418 I know, I know, you are one of those who have been brainwashed per those damn physicists, well you have 2 options, you stay like this for a lifetime, you are taking some money to brainwash others, how does this accursed doctrine command you, or try something old like Nikola Tesla, Karl Schappeller, Oudin, D'arsonvall, Lakhousky.
      I bet you didn't see Maria Pereda's video and that you are expressly forbidden to believe in Aether, but then you go and see the patent for Karl Schappeller device, on Google. well, the description and discussion will be a lot of sand for your truck, as usual for those who took the brainwash of the order, so make an equation there to discover the sex of the Angels, it is faster.

  • @Aristothink
    @Aristothink 7 หลายเดือนก่อน

    Physics amazes me every day !! Great video....

  • @syedjafferimam5789
    @syedjafferimam5789 2 ปีที่แล้ว +9

    "It feels lighter without getting lighter"
    My brain hurts

  • @dharma_donk170
    @dharma_donk170 9 ปีที่แล้ว +6

    I've just began to explore your channel, coming over from Vsauce. Fascinating presentations illuminating new principles and curiosities I haven't encountered before; so thank you for what you do. I'm real glad channels like yours and his exist and are so popular.
    I still don't feel like I understand Gyroscopic Precession, although I've only just found out about it.

  • @AlltimeConspiracies
    @AlltimeConspiracies 10 ปีที่แล้ว +44

    Really interesting. Thumbs up from us!

  • @Skoots00
    @Skoots00 5 ปีที่แล้ว +4

    Watched this about a year ago - I don't know anything. Took an engineering class. Understands most of it. School is actually useful!

    • @EliteTeamKiller2.0
      @EliteTeamKiller2.0 3 ปีที่แล้ว +2

      Eh, any science related to physics requires the student to do most of the work. I'd say the utility of school when it comes to physics and similar physical sciences is that it sets a study schedule and holds the student accountable to it.

  • @Artemis-ou7cs
    @Artemis-ou7cs 2 ปีที่แล้ว

    Very good explanation!! I was looking for this. Nice!

  • @RobBates
    @RobBates 10 ปีที่แล้ว +6

    Great explanation. You broke it down masterfully for easy comprehension. Bravo!

    • @majorpan
      @majorpan 10 ปีที่แล้ว

      haha true! no explanation at all

    • @phynos8936
      @phynos8936 10 ปีที่แล้ว +1

      Julian H. Depends how knowledgeable you are in this area.
      If you are confused I suggest reading about Newtons Laws of Motion, what Weight is, and Torque.
      There are many videos online that explain these concepts.

  • @trojan88tm
    @trojan88tm 10 ปีที่แล้ว +24

    i'm a big fan of these interactive video's. makes you think without just handing you answers.

  • @AJPMUSIC_OFFICIAL
    @AJPMUSIC_OFFICIAL 3 ปีที่แล้ว +1

    Who ever did the music needs a medal

  • @carmelpule6954
    @carmelpule6954 3 ปีที่แล้ว +51

    I am now much older than Professor Eric Laithwaite when he passed away, and I did go up to London to attend some of his lectures. I am to write is meant for others to think about and if they have the time and equipment, they can try and confirm it.I did it in my simple manner of home experimentations.
    1. Keeping the spinning plane. The mass in the spinning wheel of a gyro acts in the plane of rotation and tries to keep it due to the high angular momentum.
    2. Precession at 90 degrees. The plane of the spinning wheel may be looked upon being a lot of individual elemental masses placed on flexible radial spokes and each elemental mass can be treated individually. When the wheel is fast spinning on its axis all the radial masses are spinning with a high circumferential velocity/momentum depending on the radius and the spin rate. If at any moment, the spinning axis of the gyro wheel is tilted, then some mass at the end of the tilting radius will try and move out of the spinning plane while another on the opposite radius will move out of the spinning plane in the opposite direction on a diameter. So having an additional force/torque applied to them the elemental masses will accelerate out of the original spinning plane. As these elemental masses are tied with a constant radius with the axle, then while the tilt of the axis causes the particle to accelerate out of the relative halves of the wheel, their final " integrated circular motion" will be a maximum when the mass particles are in quadrature or 90 degrees to that location where they began to accelerate out of the original plane. Eventually when the tilt of the axis is long enough then all the mass particles on the spinning wheel will take up spinning in another plane at a 90-degree angle with the tilt that accelerated them out of the original plane. That is a 90-degree precession effect.
    3. Precession and holding of a gyro on an extended shaft. If a spinning wheel is placed at the end of a long extended shaft where the free end is placed on a vertical stationary mast, and the spinning wheel at a radius R from the support mast, then as the wheel drops vertically, it tries to do this with the acceleration of 32 ft/sec^2 of gravity, which is relatively slow with respect to the velocity of the spinning mass particles. With the vertical drop, hence the tilting of the axle, the mass particles on the upper half of the spinning wheel will be "accelerated out" away from the central supporting mast and those in the lower half will be "accelerated in" towards the support mast. This acceleration one way and the other on the upper and lower half of the spinning wheel will cause the integrated acceleration to change the plane of spinning at 90 degrees to the initial vertical drop, horizontally. The spinning wheel changes its plane at a right angle to the vertical dropping, hence tilting axle. It is important to realize that the particles that accelerate out or in towards the central support mast are spinning much faster than the spinning wheel, as one whole unit, can drop due to slow gravity effects, so the top and bottom masses in the plane of spin, will try and replace each other so fast that they cause a high inertia fluctuation, similar as a big capacitor in a low pass filter objects to an AC fluctuation or "stationary mass inertia" be it electrical or statically and dynamically mechanically. This 90 egress action will try and fling the pivot support point on the central stationary mast in a horizontal direction, but it cannot as the mast is stationary, so the horizontal reaction must bring about the result as the free rotation of the whole spinning wheel about the stationary support mast. So "a tiny vertical drop" tried to precess the wheel in "a horizontal motion" at a related natural rate of change.
    4. Precessed rising of the gyro. If the natural rate of change of the horizontal motion is hurried up ( or slowed) then a second precession process will take place and the reaction to it will be a 90-degree reaction where the spinning gyro will now lift, ( or drop) gaining (or losing) potential energy from the eternal input. If for any reason the whole spinning wheel is dropped vertically in a sudden action, then the gyro wheel will wobble along changing KE into a faster horizontal precession which in turn will raise the gyro and this transferred oscillation will proceed till it stabilizes, as it is damped down. There is another interesting reason why the spinning wheel of a gyro when on an extended axle on a central stationary mast may lift up to the vertical till its axle is perfectly vertical.
    5. Rising (or dropping) of a gyro while precessing around central stationery must. When the fast-spinning wheel of a gyro spins and at the same time rotates /wobbles around a central stationary mast, and is SPUN AND TRANSLATED, then this spinning and translating effect will result in the spinning stationary circle, being modified into a type of cycloidal motion and what is more, the cycloidal motion of the particles on the spinning wheel will vary as the spinning wheel is tilted and then it rises and drops below the horizontal spinning axis. Any cycloidal trajectory, unlike a perfect circle, it will have a variation in velocity and in acceleration and hence the related generated forces with the varying acceleration as a particle moves along the cycloidal trajectory. If the extended axle of the gyro is about 45 degrees tilt, then the conical cycloidal trajectory of the spinning and precession wheel around the central support mast, the differential accelerations, hence the accompanying differential forces will " throw up" the whole gyro to lift it to try and reach the vertical position ( or the inverted vertical position). Here all the mass particles will be moving in a horizontal circle with constant velocities and constant accelerations and hence stable. In practical experiments, this vertical stable position ( as a spinning top) will be held till the gyro slowing down and the weight due to gravity will take over. It seems that all the internal cycloidal forces on the spinning particles of the gyro wheel are RADIAL to the center of the spinning wheel and hence these cycloidal acceleration forces will not precess the gyro hence the " throw up" and rising of the gyro dictated by the cycloidal differential accelerations.
    6. Centrifugal force. If one looks into the differential accelerations that exist withing the tilted, conical, cycloidal trajectory of the mass particles in a spinning gyro and translating wheel, one will notice that the accelerating components of the tilted acceleration vector of the elemental particles do oppose the centrifugal force. Many people declare ( and they are correct) that the centrifugal force in a spinning and precessing gyro " vanishes" and the solution is found in the differential vectorial accelerations contained in the cycloidal trajectory of spinning and translating circulating surface of a conical, tilted, translating and spinning of a balanced wheel. If one looks at the PLAN view of the cycloidal path traveled by each mass particle in spinning and processing gyro one will see CONVEX AND CONCAVE curves traversed by particles navigating the upper-lower halves of the spinning wheel curves with respect to the central pivot and this means that there are TWO CENTRIFUGAL FORCES one acting inward ( on the upper one) and one acting outwards ( on the lower half. The centrifugal force acting inwards has a higher magnitude than the centrifugal force acting outwards. This is due to the fact that the cycloid has a distorted elliptical plan view were the convex and concave curves have a different radius of curvature which the mass particle traverse to generate the inbound and the outbound centrifugal forces acting at different heights to balance out the gravitational torque and the outwards centrifugal force on a floating gyro. There are other dynamics unbalances in a " statically and dynamically balanced wheel"
    7. When the external torque on a gyro is removed suddenly, the wheel shows no inertia effect as it is not the whole mass of the wheel that is being translated, but effectively it is the elemental particles that are being displaced out of the spinning plane and hence effectively little inertia is shown when the outside force is reduced unless the whole spinning gyro is shot out and thrown off the muzzle of a gun, where all the mass is being translated.
    8. The gyro cannot ever produce any action without any reaction and if one tries to propel a spacecraft with it, and try to spin the wheel in space to get it going, the spacecraft will spin back. If one seeks reactionless actions..........they must look elsewhere but not inside the gyro.
    9, Finally here is the equation of a flat gyro operating on a rotating arm to check and approximate to the differential accelerations of the family of complex three-dimensional conical cycloids. I obtained and plotted these differences in accelerations as the cycloidal trajectory is followed and the difference of accelerations on the upper half and lower half of a spinning gyro. It is all very clear, hence the tiny differential repetitive forces give the gyro its elegance and unintuitive perplexing behavior.
    10. Location of particle = R1. e^jw1.t + R2.e^jw2,t
    velocity of particle = R1. jw1.e^jw1.t + R2.jw2. e^jw2,t
    acceleration of particle=R1. (jw1)^2.e^jw1.t + R2.(jw2)^2. e^jw2,t
    Would be grateful if any one would to confirm this work.
    for reference of rising gyro see.
    th-cam.com/video/FRvrmTLHx_M/w-d-xo.html

    • @carmelpule6954
      @carmelpule6954 3 ปีที่แล้ว +5

      Here is some additional information. In the videos showing gyros floating against gravity, normally the spinning gyro has the upper half of the spinning wheel rotating with angular velocity Ws in opposite direction to the precessing angular velocity Wp, while the lower half of the spinning wheel travels in the same direction as Wp. Hence in the upper spinning half, there is velocity subtraction and in the lower spinning half, there is an additive velocity effect of Ws and Wp in relation to their respective radii Rg and Ra.
      All the characteristic functions of a gyro are due to the accelerations that take place in the thick voluminous three-dimensional cycloidal path that the gyro wheel has to go through even if we regard the gyro as a flat circular plate. Assume the gyro spinning wheel is a perfectly flat circle with a radius of the spinning wheel being Rg while the extension arm from the central supporting pivot is Ra.
      Taking one mass particle on the peripheral circumference of the gyro then, when Rg is vertical, the mass particle is Ra horizontally away from the vertical line above the supporting pivot. When the mass particle is horizontal, then the distance of the mass particle from the vertical line going through the central support pivot point is the squareroot(Ra^2 + Rg^2). This means that in one spin the mass particle has to move radially out and in along a cycloid path which is ( sqrt( Ra^2 + Rg^2)) - Ra. wide/thick.
      The diameter of the gyro spinning wheel, 2.Rg fits tangentially to Ra while the two ends of the horizontal diameter touch the larger circle of radius ( sqrt( Ra^2 + Rg^2))
      Due to the different velocities with respect to ground, of mass particles traversing in the upper and lower half-circles of the spinning wheel, the particles on the slower upper half will have a curve with its center of curvature outside the footprint made by the circle Ra, while the faster particles on the lower half will have a curve with its center of curvature, just a little behind the support pivot at the center of the footprint made by the circle of radius Ra.
      This is the magic that diminishes the normal outbound centrifugal force as all the slower mass particles on the upper half of the spinning gyro in the videos shown are traversing trajectories that have their center of curvature outside the footprint made by the circle Ra. This is an inward bound centrifugal force that opposes that inbound centrifugal force which exists on the lower half of the spinning gyro shown in many " floating gyros going around a central pivot point.
      The vertical distance and horizontal separation X of the inbound and outbound centrifugal forces acting on the upper and lower halves of the spinning gyros also balance the vertical gravity torque due to the weight of the gyro, (m.g.Ra) also the inertia torque which is a property of the spinning gyro (I. Ws.Wp.)
      Hence (m.g.Ra) = (F1+F2).X= (I.Ws.Wp) while the resulting apparent resulting centrifugal force is (F1- F2).
      F1 is the inbound centrifugal force while F2 is the outbound conventional when one considers the addition effect of the velocities Ra.Wp + Rg.Ws and the taking into account that the center of the instantaneous radius of the cycloidal trajectories is not Ra as when the gyro is rotated as if it was a lumped mass without its spinning. F1 disappears if the gyro is not spun at all while being rotated at Wp, where the normal conventional centrifugal force appears fully.

    • @kingmasterlord
      @kingmasterlord 3 ปีที่แล้ว

      this is a more detailed and involved version of a general idea that I had, I'm collecting aluminum cans so I can do some sand casting, maybe I'll work on this first. I was going to make an exoskeleton but this will work as a first project.

  • @TRoberti023
    @TRoberti023 7 ปีที่แล้ว +153

    my only question with this is that he struggled to lift the device when he had his hand very near the center of mass. The closer you are to the center of mass, the less torque you have to apply to keep the object upright. When he holds his hand at the base of the shaft right next to the wheel it's little to no torque. So he'd be applying 42 pounds of force to lift the object. Then when it's spinning, he easily lifts it. like it's not even close to 42 pounds. I understand that the spinning causes the object to want to maintain its horizontal orientation, thus negating the guy's need to apply a torque to keep it upright. That is what allows him to hold it at the end of the shaft. which would be impossible for any human being to do. But, shouldn't he still struggle to lift it? he should lift it as if he were lifting it at the base. which was very difficult for him. I think the answer lies with the fact that he threw the device forward and it lifted itself up. But if that's the case, the scale should decrease at that point. Which would make sense to me. But it didn't. Perhaps because the movement, the scale jumped around and made it difficult to see that. Can anyone help me with this?

    • @jpuglise1
      @jpuglise1 7 ปีที่แล้ว +15

      I had the same thoughts

    • @zhiqiangyan1554
      @zhiqiangyan1554 5 ปีที่แล้ว +8

      The explanation may still be what is claimed in the video. When the object spinning, he lifts it without putting any effort to maintain it up his head. Note when the object is above your head, it locates at an unstable equilibrium position, and you make lots of effort to keep it there. This effort is released when the object is spinning.

    • @madmax43v3r
      @madmax43v3r 5 ปีที่แล้ว +18

      Two things I can add: The scale doesn't have to go down during the lift up, since accelerating the mass upwards would increase the weight on the scale, so the weight loss could cancel out the acceleration. Maybe it only works when he is letting it spin, as when he did drop it we saw the expected up and down on the scale. However the accuracy of the measurement is not good enough to make any conclusions at this point.

    • @joseinfante5054
      @joseinfante5054 4 ปีที่แล้ว +7

      @@madmax43v3r Nothing will happen, this is a gyroscope, a stabilizer, nothing to do with gravity. and gravity does not exist, it is the Aether subatomic particle pushing towards the earth's magnetic

    • @Mex_Luigi
      @Mex_Luigi 4 ปีที่แล้ว +20

      well, the scale is based on weight, and it never stopped being a certain weight.
      let me give you a weird example. you can't weigh an airplane while it's in flight. but if you tried to knock it out of the way with something, it would still take the same amount of force to move it that it would if it was on the ground. that's because lift and torque don't change weight or mass.

  • @dr-maybe
    @dr-maybe 10 ปีที่แล้ว +5

    You make great videos, thank you for that

  • @jimf2525
    @jimf2525 3 ปีที่แล้ว +5

    I love this video. Thank you. I think your graph started after you accelerated it upward. When you were doing that the scale should have read higher. I think that the reason it feels lighter has to do with free weight lifting versus weight machine lifting. Free weight lifting requires more control and it’s harder to do. It requires control in all axes (translational and rotational). The precessing one controls the 3 rotational axes a fair amount and maybe some translation. This, from a mere industrial engineer who is 60 y/o :)

    • @joshc4519
      @joshc4519 2 ปีที่แล้ว +1

      I think you hit the nail on the head on the free weight lifting vs stable machine lifting. I was trying to understand why it was so much easier for him to lift it spinning than stationary, and I think this has to be the primary reason. Yes, the faster processional rate as explained in the video would have given him a boost to the "lift", and other circular movements maybe helped out as well, but I think also the stability has to be the main reason. I graduated in mechanical engineering and have done my share of weight lifting also.

    • @MushookieMan
      @MushookieMan ปีที่แล้ว +1

      Also, when he applies a torque to get it to start to rise, he is using *both hands* not only to apply the torque, but to also apply an upward impulse to the mass and then use momentum until he's in a more advantageous joint position. When he tried to lift it without it spinning, he tried to do a very static lift with one hand. (I just got my BSME and I lift weights as well)

  • @AliRaza-sz9fp
    @AliRaza-sz9fp 5 ปีที่แล้ว +1

    Keep it up.We r very thankful...

  • @billkipper3264
    @billkipper3264 8 ปีที่แล้ว +4

    I have experienced this effect when I was in the Air Force. We removed one of the gyroscopes from a C-130 immediately after landing. It was contained in a black box with a handle to pull the box out of its mount and carry it. When I slid the box out it stayed in the horizontal position as if defying gravity. It stayed in that position as I carried out of the aircraft and to the truck which I put it in. I was unaware of gyroscopic precession at the time so it was a unique experience.

    • @lucaslucas191202
      @lucaslucas191202 3 ปีที่แล้ว

      Lol thought there was some sort of antigravity secret didn’t you?

  • @Hevander75
    @Hevander75 10 ปีที่แล้ว +26

    thors hammer has a gyroscope in it

    • @notydino
      @notydino 10 ปีที่แล้ว +3

      more like a lightning powered motor.

    • @wintertheanalyst1053
      @wintertheanalyst1053 9 ปีที่แล้ว

      or its made of cardboard and a person shoots what hes attacking

  • @gueldenerlarry8270
    @gueldenerlarry8270 4 ปีที่แล้ว +1

    I think another factor of it feeling lighter is when you spin it faster then its precession, you apply a moment around the z axis in your body which makes it want to change its direction to the z-axis which makes it easier to lift.

  • @mongohotline
    @mongohotline 2 ปีที่แล้ว +1

    Thank you! Never worked out the answer to what was going on with this.

  • @GodsMistake
    @GodsMistake 10 ปีที่แล้ว +36

    Now put a spinning wheel on the other side as well.
    Now spin them in opposite directions.
    Now fall into the Black Hole you just made.

    • @Micknesss
      @Micknesss 10 ปีที่แล้ว +39

      Racist!

    • @PhucLe-qs7nx
      @PhucLe-qs7nx 10 ปีที่แล้ว

      Can anybody what's going on here, in this comment and replies? I have no faintest idea?

    • @TaufikAkbar7
      @TaufikAkbar7 10 ปีที่แล้ว +5

      if you split the weight to 19.5kg each wheel and somehow you managed to hold it right in the middle of the bar then it will feel the same as when it's spinning because again, no torque needed.

    • @timothywhite9089
      @timothywhite9089 10 ปีที่แล้ว

      That's actually very interesting Fletcher. I wonder what WOULD happen?

    • @timothywhite9089
      @timothywhite9089 10 ปีที่แล้ว

      Timothy White I think that if you got both spinning in the SAME direction and had a pivot point halfway between the two and pushed up or down on either wheel, there would be yet another force that would cause the whole assembly to spin

  • @johndifrancisco3642
    @johndifrancisco3642 7 ปีที่แล้ว +3

    Your videos are awesome! They are SO diverse, I could binge watch forever. Thank you.

  • @tsunghan_yu
    @tsunghan_yu 5 ปีที่แล้ว

    excellent explanation!

  • @RakeshGurjar
    @RakeshGurjar 4 ปีที่แล้ว +1

    Explanation is really good

  • @Epenser1
    @Epenser1 10 ปีที่แล้ว +28

    What if you try to move the other way (that would be...counter-clockwise) with the wheel spinning the same way. Would it feel the same ? heavier ? Would it be virtually impossible ?

    • @Darkness251
      @Darkness251 10 ปีที่แล้ว +10

      So if you turn like in the video the torque will get to 0 but if you're going against it then it should be twice as heavy, hmmm good question

    • @Epenser1
      @Epenser1 10 ปีที่แล้ว +13

      Darkness251 It's actually answered in the video @ 2:53

    • @Darkness251
      @Darkness251 10 ปีที่แล้ว +2

      e-penser ah yeah I see, thanks

  • @Jimlll56lllFL
    @Jimlll56lllFL 10 ปีที่แล้ว +12

    Aha! So THAT is how the aliens do it.

    • @OpTicAlways
      @OpTicAlways 10 ปีที่แล้ว +1

      It all makes sense now...

  • @jimroth7927
    @jimroth7927 4 ปีที่แล้ว +1

    I think there is another aspect to this. With the gyro he is able to move the muscles effecting the lift through a longer distance than the actual vertical distance, producing an advantage similar to that provided by rope and pulleys. Normally (without the gyro) only vertical movement needs to be considered, but with the gyro horizontal movement is translated by the gyro into a vertical force, so horizontal movement can add to the muscular distance providing the pulley-like advantage. Bringing horizontal movement into play also allows the use of the strong muscles of the core and legs.
    Edit: I went and learned a little about angular momentum. What I called a vertical force from the gyro is actually a change in the angular momentum which tends to rotate the gyro upward about the axis formed by his hand on the bar. So the gyro tends to rotate up, reaching a high point when the bar is vertical, and then continue rotating down and this happens in response to torque applied by sweeping the apparatus in a horizontal direction . So I think my explanation regarding mechanical advantage is basically correct.

  • @Hubba_Bubba
    @Hubba_Bubba 5 ปีที่แล้ว +1

    Не ожидал что будет так интересно, когда я переходил с первого видео. Спасибо за это наглядное пособие.

  • @roypeer3725
    @roypeer3725 2 ปีที่แล้ว +7

    Refer to the small gyroscope found between 2.34 and 2.46 in the video. Presumably when the fly wheel isn't spinning then the counter weight and flywheel balance and the bar connecting them is horizontal.
    A question I have is ... when you increase the precession causing the flywheel to rise:
    1. What force (assuming there is a force) would be required to stop the flywheel from rising? And ...
    2. What force (again, assuming there is a force) is required to increase the precession speed of the gyroscope? And ...
    3. Assuming there are the two forces above ... what is the relationship between the two forces? Are they equal? Or is one half the other? Or what?

    • @Observ45er
      @Observ45er ปีที่แล้ว

      NO. If that was the case, there would be NO precession when it was let go with gyro spun up. Look at time at time 3:10 to 3:27. It is precessing because the wheel weighs more than the counter weight.

  • @zombie668
    @zombie668 3 ปีที่แล้ว +5

    @ 1:39 "So, two handed, that's as far down the shaft as you can hold it?" I lol'd!

    • @jounik8980
      @jounik8980 3 ปีที่แล้ว

      Why

    • @zombie668
      @zombie668 3 ปีที่แล้ว

      @@jounik8980 because. thats as far down on the shaft as he can hold it! :)

  • @mineking57
    @mineking57 3 ปีที่แล้ว

    Just to clarify and note my understanding. Correct me if I'm wrong but:
    It's easier to raise over your head while it's spinning for two reasons
    1) The spinning of the wheel causes the whole thing to process rather than fall, removing the need to apply counter torque to keep it horizontal and making it easier to hold in general.
    2) In the motion to raise it up the end is pushed in the direction of the procession, increasing its speed and causing it to naturally rise up as well.

  • @richardbrown1189
    @richardbrown1189 3 ปีที่แล้ว

    That's a great series of demonstrations and explanations. Even Eric Laithwaite himself said that it's only the apparent weight of the gyro that changes. What's also interesting is that the effect only seems to be sustainable for one rotation of the apparatus before the gyro falls. It's certainly a very intriguing phenomenon but it's not anti-gravity as it has often been described!

    • @johno9507
      @johno9507 2 ปีที่แล้ว +1

      That's because your wrist can't keep rotating, it can only rotate about 180° and when it stops rotating then the gyroscopic precession stops and the weight falls.

  • @FiraRally
    @FiraRally 8 ปีที่แล้ว +182

    3:00 GASP! IT CHANGED BY 0.1g!!!!!!!

    • @MrRandommlol
      @MrRandommlol 8 ปีที่แล้ว +35

      +Firal Rally ILLUMINATI CONFIRMED

    • @dealerovski82
      @dealerovski82 8 ปีที่แล้ว +1

      +Firal Rally Science

    • @rafkos6790
      @rafkos6790 8 ปีที่แล้ว +27

      +Firal Rally 4+3+1+9 = 17 4+3+1+0 = 8 17-8 = 9 9^1/2 = 3 half life 3 confirmed

    • @jorislal
      @jorislal 8 ปีที่แล้ว +10

      +Rafkos
      9^1/2=4.5
      9^(1/2)=sqrt(9)=3
      You just crushed our hopes and dreams for HL3...
      I hope you're happy you monster!

    • @_tyrannus
      @_tyrannus 8 ปีที่แล้ว +2

      +Rafkos 3/3 = NaN
      KSP confirmed

  • @bretteux
    @bretteux 3 ปีที่แล้ว +5

    Great stuff Derek! But actually, I think it literally does weigh less as you twirl the apparatus above your head. That first second or so as you start the rotation, there is a small downward force (which I think accounts for the little blip on the scale at 0:28) but as it spirals up it is losing angular momentum causing a small force in the opposite direction, making it feel slightly lighter. You'll note that if there were no affect the scale should actually register more weight as you push and accelerate something heavy upward over your head. The scale does not show this (unless that is the blip at 0:28, but I doubt it as I don't think you start to actually lift it until after) making me think it must effectively be a tiny bit lighter.
    The scale with the little gyro shows no change because the gyro is on a balance with a weight and can teeter-totter but the gyro clearly does want to move up and down as you nudge the angular speed of the base (like at 3:39). So, if it were not allowed to teeter-totter (locked in the Z axis) I claim the scale *would* show a change as the rotation rate is nudged one way or the other. So Derek, my guess is that when you first start to whirl the big heavy spinny thing (my technical term), there was a small extra downward force felt in your left hand which was then reversed as as the spiral slowed as it lifted. For sure, the change in how you have to apply the vectors of force (as you point out around 1:52) is the bigger effect you're experiencing but I don't think it's the only one.
    Many thanks, I'm learning lots from your channel.

    • @Anksh0usRacing
      @Anksh0usRacing ปีที่แล้ว

      Intriguing. Requires further research

    • @chrisjenkins1989
      @chrisjenkins1989 5 หลายเดือนก่อน

      Yes, you get it. You see the dumbfuckery that they are doing. I do also.
      I have no desire to correct them because they are following the status quo’s narrative.

  • @schizoidpilled
    @schizoidpilled 4 ปีที่แล้ว

    This video was epic.
    Very cool👍🏻👍🏻

  • @Mysoi123
    @Mysoi123 8 หลายเดือนก่อน +1

    For anyone who is still skeptical, here is a simplified explanation.
    support the displacement is the weight and it has the value of 3
    Here we have two expressions:
    -10 + 13 = 3
    0 + 3 = 3
    In the first expression, you need to take 10 steps down and then 13 steps up. Are you tired? Probably yes, but the total displacement is just 3 steps.
    2. In the second expression, you only walk 3 steps forward, so you're less tired, even though the displacement is the same.
    That is the key. The work done by the person holding the object is minimized when the object is precessed while the total weight remains the same as before.

  • @DRIFT4URLIFE
    @DRIFT4URLIFE 8 ปีที่แล้ว +31

    Derek, this is fascinating to me. I think you should try to conduct the experiment with a weight that is much heavier. A weight that you normally could not lift over your head.

    • @richtigmann1
      @richtigmann1 5 ปีที่แล้ว

      vsauce made a video on this. it's called spinning

    • @TheDarkJohns
      @TheDarkJohns 4 ปีที่แล้ว

      @@richtigmann1 Thank you! I bet I'll probably even end up knowing why "spinning" is even called spinning and not katshibula, or something like that, because... it's Vsause! (and I love it that way xD)

    • @kozatas
      @kozatas 4 ปีที่แล้ว +1

      He can't lift 19 kgs with that thin arm either.

    • @longislandlegoboy
      @longislandlegoboy 4 ปีที่แล้ว

      +coop island it’s really not that hard to lift say 14/15kg as long as there’s no torque making it harder. I’m sure 19 is possible with some work for most men

    • @kozatas
      @kozatas 4 ปีที่แล้ว

      @@longislandlegoboy he/you sure can deadlift 19 kgs. I mean in a position like 0:33 he can't lift. en.wikipedia.org/wiki/Lever

  • @AldeyWP
    @AldeyWP 7 ปีที่แล้ว +3

    Is this and the other related video have similar soundtrack from Interstellar or not?

  • @clivemitchell3229
    @clivemitchell3229 2 ปีที่แล้ว +1

    IIRC, instead of lifting it straight up, you are effectively moving it up a spiral ramp which requires less force from your hand but over a longer distance.

  • @jensphiliphohmann1876
    @jensphiliphohmann1876 2 ปีที่แล้ว

    @Veritasium
    It perfectly makes sense. Pretty much of the weight we feel when carrying something - or someone - is due to torque since it's (or her or his) center of mass is somewhat away from or own. It's by far much easier to carry pretty much weight in a rucksack than the same amount in a normal back.
    This also causes nursing staff to ruin their backbones when moving physically disabled people. All due to torque.

  • @_Mentat
    @_Mentat 2 ปีที่แล้ว +10

    The fact remains: he could hold the disk at arm's length when it was spinning and was not strong enough to do the same when it was not spinning. The weight was all there somewhere, but it somehow transferred from the disk to the rest of his body. The readings from a force sensor in the handle would be interesting.

  • @oafkad
    @oafkad 10 ปีที่แล้ว +41

    I feel like I'm growing up. Between the original and this video I only laughed at the word "shaft" 3 or 4 times.
    Really weird. Was wondering when I'd finally enter adulthood. 27 appears to be the age.

    • @4Shaman20
      @4Shaman20 10 ปีที่แล้ว +17

      Don't do it! Growing up is way too boring. Have fun and stay a kid.

    • @oafkad
      @oafkad 10 ปีที่แล้ว +5

      I shall take your advice to heart Stoned Pony .
      Shaft.
      Heh. Still funny.

    • @NomadUrpagi
      @NomadUrpagi 6 ปีที่แล้ว +1

      Yay! Now you're ready to kiss a girl in a cheek for the first time!

    • @dodovomitory3496
      @dodovomitory3496 5 ปีที่แล้ว

      you're now 31 years old wow.

    • @richardschiller7803
      @richardschiller7803 5 ปีที่แล้ว

      sounds like a guy who likes getting shafted

  • @Fuzzybeanerizer
    @Fuzzybeanerizer 5 ปีที่แล้ว +2

    0:54 The question remaining in my mind is not about a lack of lightness but about a lack of heaviness. The scale should indicate greater "weight" as the force accelerating the wheel upwards is added to the pre-existing weight of man plus wheel. Or does a gyroscope somehow redirect a horizontal push into a vertical motion, without incurring a vertical reaction? If I fired a marble horizontally out of some type of gun, and it encountered a curved track that redirected its motion upwards, then that track would experience a downward recoil.

  • @mdimtiazabedin9114
    @mdimtiazabedin9114 3 ปีที่แล้ว

    loved the experiment

  • @nilssab
    @nilssab 10 ปีที่แล้ว +4

    The reason lifting it feels lighter is because between you and it, you only have to increase the angle of the rod in small steps, after which the flywheel auto corrects, so lifting it is essentially no different than holding it.
    Another way to look at it is that you only need to provide the energy to move it, not to hold it. The rod with the flywheel is basically at a stable potential as it is, so the only extra energy you need to move it is for the movement, kind of like pushing a several tonne boat which is floating. Which we all know feels very light.

    • @nilssab
      @nilssab 10 ปีที่แล้ว +1

      just to clarify, from the perspective of the lifter, the weight of the flywheel is cancelled by exerting a torque on the lifter. So when lifting it further, save countering that exerted torque, it is like pushing an object in zero g(or boat on water)

    • @erwanmonfort7506
      @erwanmonfort7506 9 ปีที่แล้ว

      I disagree. There's a difference between pushing an object and holding it. You said it yourself " lifting it is essentially no different than holding it" which is true in that case ( although it has to do with the repartition of its mass on the rod). Your example of the boat is rather to explain the work of a force (which is 0J for the its weigh, and only the resistance of ice/water works here).

  • @Silver9k
    @Silver9k 9 ปีที่แล้ว +17

    It seems like you only barely touched the fact that due to gyroscopic precession the force acts in 90 degrees the direction of rotation. The flywheel feels lighter because the lateral force you impose on it is acting in the vertical plane thus aiding in you lifting the wheel. If you put the drill in reverse you would have to spin in the opposite direction. This is a huge factor with single engine propeller aircraft, and created several accidents with inexperienced pilots. The Sopwith Camel WWI aircraft was perhaps one of the most dangerous as both its propeller and engine both rotated making this effect immense. The rolls of the pitch and yaw controls were essentially reversed at high engine speeds making it very difficult to control.

    • @fuckcensorship8809
      @fuckcensorship8809 5 ปีที่แล้ว +1

      Best misunderstanding ever.

    • @johnnyllooddte3415
      @johnnyllooddte3415 5 ปีที่แล้ว

      are you sure.. have you tried swinging it in the opposite direction.. you dont know this for sure.. half is going up and half going down whether the flywheel spun in either direction or spun in either direction..
      youre just guessing with ZERO facts..another 1000 worthless comments from the zootsuite band

  • @kellyperes4415
    @kellyperes4415 5 ปีที่แล้ว +4

    Isso é realmente incrível! Adorei seu canal.

  • @tomkelly8827
    @tomkelly8827 2 ปีที่แล้ว

    There must be some important applications for an effect like that though. I am not sure where, but it is quite a stunning effect!

  • @stza16
    @stza16 8 ปีที่แล้ว +673

    All lies. The answer is magic.

    • @stiggyh
      @stiggyh 8 ปีที่แล้ว +11

      +drz science IS magic :)

    • @AmirAli-qh3ve
      @AmirAli-qh3ve 8 ปีที่แล้ว +4

      +DreahMerDevol Idiot. God is the center of Science.

    • @iceneko9170
      @iceneko9170 8 ปีที่แล้ว +2

      Amir Ali wtf did you hear that?

    • @AmirAli-qh3ve
      @AmirAli-qh3ve 8 ปีที่แล้ว +6

      Dj Barrington
      From me... I'm a professor.
      Science, Mathematics, Logic, and Reason, are all but a single apparatus in God's ingenuity.

    • @iceneko9170
      @iceneko9170 8 ปีที่แล้ว +2

      not science, that's a creation of man based on examinations of god's creations.

  • @BiddieTube
    @BiddieTube 10 ปีที่แล้ว +9

    Thinks you shoulda had on a motorcycle helmet, or hard hat at least because, well you did have a 40lb steel bar above your knoggin. I feel great that I do not think I learned anything here ( I understood and predicted accurately) but I am one who is always studying stuff. Nothing better than learning anything, the more you learn the easier learning becomes. Keep up making cool educational vids :)

  • @free_br
    @free_br 4 ปีที่แล้ว +1

    Force is getting balanced differently but it is same, hence weight remains the same. :)
    Nice experiment to observe torque ! Thanks.

    • @free_br
      @free_br 4 ปีที่แล้ว +1

      I wish I had seen gyroscope that closely when I had a chance in a aeronautics lab back in India.

  • @angrysheepdog9744
    @angrysheepdog9744 2 ปีที่แล้ว

    The forward progression translates the downward vertical gravitational force(s) into rotational force(s), yet not escaping, illustrated by the reduction in the holder's upward vertical effort level, yet the overall downward vertical force measured by the scale remains the same. Seems like the holder becomes an integral part of the overall rotational unit's translation energy dynamic while the gross static gravitational weight value of the gyro and holder is transferred to the bottom of the feet.

  • @markm8188
    @markm8188 5 ปีที่แล้ว +37

    Prof. Laithwaite is just more buff than you, guy.

    • @jimroth7927
      @jimroth7927 4 ปีที่แล้ว +7

      The prof was a brilliant guy, but he got this one wrong.

    • @RWin-fp5jn
      @RWin-fp5jn 3 ปีที่แล้ว

      @@jimroth7927 Well, if you look at the scales at the beginning, the weight actually displays 94kg not 91 kg as mentioned by our guinee pig. During the lift off rotation there is an average LOWER value of oscillation around 91 kg. If we want to be precise, than we should be precise. Just saying......

    • @starsoffyre
      @starsoffyre 3 ปีที่แล้ว

      Prof was also often seen at the campus gym doing olympic lifting

  • @neoshenlong
    @neoshenlong 7 ปีที่แล้ว +6

    Proffesor "Lightweight", I heard. Fitting.

  • @caderbavahsiddicl6414
    @caderbavahsiddicl6414 3 ปีที่แล้ว

    Thank lots brother ...

  • @efai
    @efai 2 ปีที่แล้ว

    I really like this professor Rod Cross, he looks like a great human being..

  • @Mehrdad995GTa
    @Mehrdad995GTa 4 ปีที่แล้ว +4

    I'm curious to know about the poll result :)

  • @maxschwenke742
    @maxschwenke742 10 ปีที่แล้ว +6

    Gyroscopic precession is such a difficult concept to grasp! 3 years of engineering and i still don't understand it. Granted however, im not a mechanics major..

  • @noname-ck2os
    @noname-ck2os ปีที่แล้ว

    Man... This really helped for my homework ☺️

  • @cslloyd1
    @cslloyd1 4 ปีที่แล้ว +1

    the length of the shaft affects how light it feels. You get leverage from the longer shaft. It would feel even lighter if the shaft were longer, and heavier if it was shorter.

  • @TheFifthGreatApe
    @TheFifthGreatApe 10 ปีที่แล้ว +5

    Next video: Apparent weight Vs Actual weight?

  • @RipleySawzen
    @RipleySawzen 10 ปีที่แล้ว +4

    I think one factor that makes the wheel feel lighter is that the spinning motion dampens the small forces of imbalance your hand imparts to the shaft. It's like lifting a free weight vs a fixed weight. The fixed weight feels lighter.

    • @Lamarth1
      @Lamarth1 10 ปีที่แล้ว

      Yep, and it doesn't require stabilizer muscles at all - the force does not have to be controlled or balanced. I expect that even if he didn't cheat by imparting initial precession to cause lift then it would still seem light.

    • @fede_r__
      @fede_r__ 10 ปีที่แล้ว

      Martin Jenkins
      but then it would be like lifting the unspinning weight from the weighy itself, not from the shaft, which he tried and he almost couldn't...

    • @Rulerofwax24
      @Rulerofwax24 10 ปีที่แล้ว

      Federico Ruttkay But even then, I think there is still a significant enough torque on his hands even when close to the center of mass. I imagine that Derek would have no problem lifting a 40 lb. dumbbell or as mentioned above, a fixed weight. I think the weight that he feels while spinning is the same as if it were a fixed weight of equal mass.

    • @RipleySawzen
      @RipleySawzen 10 ปีที่แล้ว

      Federico Ruttkay
      It's exactly as Martin said, it requires no stabilizer muscles. I can do 40 push-ups easily, but I can't do 40 bench-presses with 165 pounds, which is the equivalent weight of my push-ups. Push-ups leave your hands fixed in position, so they are a bit easier to do. The spinning causes the shaft to become fixed sort of.
      I also noted that the spinning forces your arm to rotate as well. The only way for your arm to rotate behind your head like that is to life it. So the torque from your hand is actually causing your arm to lift naturally.

    • @fede_r__
      @fede_r__ 10 ปีที่แล้ว

      I'm not sure of anything, I'd have to try it by myself. What I do know is that when you do a push up, you are not making 165 pounds of force, since your center of weight is around your waist... so a push up equals something like a 90 pounds bench press

  • @VergilArcanis
    @VergilArcanis 2 ปีที่แล้ว

    So in essence, the gyroscope action of the flywheel changes the direction of the torque, which appears to be more lateral, rather than vertical, so the apparent weight required to lift it reduces, but you are going to have another direction force moving it in a circle around the point of contact

  • @rodericmege4549
    @rodericmege4549 5 ปีที่แล้ว

    Great video, man ! Thanks ! :-)

  • @KaptenN
    @KaptenN 10 ปีที่แล้ว +3

    Why did you make diffrent prediction links if they all lead to the same video?

  • @Adamantium9001
    @Adamantium9001 10 ปีที่แล้ว +4

    Your explanation implies that holding the apparatus the end while the wheel is spinning would have it feel no lighter than holding it at its centre of mass while it wasn't spinning, which doesn't look like what you experience in the previous video.

    • @Schlepian
      @Schlepian 10 ปีที่แล้ว

      how does it not look like it in the previous video? The only reason why it was easier to hold while at the center was because he was using both hands.

    • @geographymathmaster
      @geographymathmaster 10 ปีที่แล้ว

      Ideally it would be that way, however there are 3 main limitting conditions:
      1: The rod to which the disk/wheel is attached is not spinning.
      2: The wheel is only spinning so quickly (gyroscopic precession is an approximation for where the disk is spinning crazy fast and the angular momentum contribution from the rotating of the entire rod-wheel pales in comparison to the wheel's angualr momentum.
      3: (as he said) his hand does not apply force at just one point, so when he picks up the thing with just his hand near the center of mass he is still pivoting the rod and the wheel...
      Also, he added a bit of an extra spin to it, which if you consider that him pushing it working in the same way that gravity pulls down, the gyro-scope almost "wants" to go upward, in the same way that it wants to go in a circle.

  • @z1mt0n1x2
    @z1mt0n1x2 4 ปีที่แล้ว +1

    3:30 well, the rotation of the 1st (outer) axel is causing the 2nd (middle) axel to rotate if it's free to do so... So what happens if you add just about as much rotation to the 2nd axel as you do to the 1st axel?
    Also, what happens if you add rotation to all 3 axels?

  • @pitrovsecondary9454
    @pitrovsecondary9454 4 ปีที่แล้ว

    I once stumbled on this phenomenon I we're fixing bikes, and was mind blown of why it wouldn't fall over when I balanced it on my finger, when it had speed. I am happy that I am not the only one who is interested in this.

  • @DimensionDrawer
    @DimensionDrawer 10 ปีที่แล้ว +10

    What if you put a wheel spinning the same direction (cw - cw or ccw - ccw) on the other side?

    • @BrunoPhilipe
      @BrunoPhilipe 10 ปีที่แล้ว +1

      The torque effects would cancel each other out and the effect would disappear. If you put each wheel to spin in different directions, then the shaft will only rotate faster.

  • @colinli1827
    @colinli1827 8 ปีที่แล้ว +6

    If you force the wheel to precess faster than its natural rate, yet at the same time force the wheel to stay at its present altitude and not allow it to rise, will the upward energy of the precession be transferred to your body, then decreasing your weight? If in space, could it be used to generate acceleration? (To be clear, I am not talking about centrifugal force based non-inertial propulsion.)

    • @furyberserk
      @furyberserk 7 ปีที่แล้ว

      I doubt it. Even stars spin, but takes two to actually move, unless the galaxy doesn't have a force in itself that spins everything as well, but I only took highschool physics.

    • @al35mm
      @al35mm 6 ปีที่แล้ว

      No, the torque will be transferred to your body. If you were standing on a turntable you and the turntable would begin to spin and there would be no weight loss :)

  • @guidedmeditation2396
    @guidedmeditation2396 2 ปีที่แล้ว +1

    This experiment reminds me of another gyroscope anomaly. There is a force emitted by a spinning wheel that counters gravity at a 45 degree angle but only during acceleration. This is why models with a gas powered gyroscope mounted on a tall pole can rise up as if it defies gravity. But it soon falls back down to the bottom because it cannot maintain that force. It only emits it when it is accelerating. Videos of this device shows them revving up the gas model engine with all its smoke and the gyro flies up into the air.

  • @MrStevegibb
    @MrStevegibb 5 ปีที่แล้ว +1

    Its because when the disc spins the mass is always changing direction in the vertical plane this stores a huge amount of kinetic energy. when you apply a force to the other end of the rod this huge amount of kinetic energy does not want to change direction and resists and applys a almost equal counter torque force from the weights side.
    This counter torque makes it almost as easy to lift as though you were lifting the item from its Center of gravity when not spinning.

    • @elams1894
      @elams1894 5 ปีที่แล้ว

      The mass does not have any extra magical energy, for it is exactly the same mass, spinning or not spinning. It has momentum when moving yes, but extra energy, no. The energy exists in the field between the spinning mass and the earth, not the spinning mass itself.

  • @schm147
    @schm147 10 ปีที่แล้ว +24

    Could any type of machinery take advantage of this?

    • @forsakenreflex4930
      @forsakenreflex4930 10 ปีที่แล้ว +8

      That is a good thought.

    • @nickyicky4549
      @nickyicky4549 10 ปีที่แล้ว

      TechReflex think about a few spinning in a primed????

    • @netauri123
      @netauri123 9 ปีที่แล้ว +14

      the international space station

    • @petethewrist
      @petethewrist 9 ปีที่แล้ว

      Our bodys are only bio machines so if this was fittid to a space craft???

    • @dannyshacklebolt2461
      @dannyshacklebolt2461 9 ปีที่แล้ว +6

      Many machines already do

  • @LeoFreemanAUST
    @LeoFreemanAUST 10 ปีที่แล้ว +4

    Math is fine, as long as you have a good intuitive understanding of what you're applying the equations to. Unfortunately, gyroscopes are obviously _not_ intuitive, if they can confuse people of Laithwaite's calibre, not to mention math phobics like myself. Therefore, there could still be unexpected phenomena lurking in rotating systems that aren't predicted by classical mechanics.

    • @maciejnajlepszy
      @maciejnajlepszy 10 หลายเดือนก่อน

      Theory not applicable to reality is worthless. It's the reality that verifies every theory, and here we see that scientists always say that one force converts to another, but have not a clue WHY it does that.

  • @paullang6622
    @paullang6622 2 ปีที่แล้ว

    I just watched your video with hot wheels cars about inclined planes (and helical ramps). . . The explanation in this video makes sense, but could there also be a component of the effect of the weight feeling lighter as you lift it that is also due to the fact that the weight, when spinning and moving around the subject lifting, is traveling a longer distance to achieve the same height?

  • @kevinkinter5256
    @kevinkinter5256 5 ปีที่แล้ว

    I think a good analogy is how in the gym, it's harder to dumbbell press two 100s than it is to bench 200. The bench press bar is more stable. The dumbbells are harder to control and requires more strength to balance. Not the same massive torque issue to overcome, but still a little if you aren't holding the dumbbells perfectly centered.

  • @moronlight3230
    @moronlight3230 7 ปีที่แล้ว +6

    This proves that feelings isn't always true :3

    • @WarrenPostma
      @WarrenPostma 2 ปีที่แล้ว

      Or rather that one's effort to lift an object is not entirely and always due only to its overall mass, but also due to what shape it is and what shape your muscles and your bones are, and what position you attempt the task from. Holding a heavy object at the end of a long rod is far more difficult because leverage works against you and you must overcome the difficulty you induced into the task by lifting a weight this way.
      Imagine we made a 1 meter long rod and had the flywheel in the center of the rod. Would a spinning wheel be easier to lift if you had one hand on either end of the rod, and the wheel was balanced? Both the stationary wheel and the spinning wheel would be equally easy to lift over your head.

  • @choimdachoim9491
    @choimdachoim9491 4 ปีที่แล้ว +10

    I'm going to have to put it on a scale and see if that last statement is true. The guy could barely lift the non-spinning weight over his head yet when it's spinning he has no trouble lifting it so I'm not convinced of the accuracy of their explanations.

    • @joseinfante5054
      @joseinfante5054 4 ปีที่แล้ว

      Nothing will happen, this is a gyroscope, a stabilizer, nothing to do with gravity. and gravity does not exist, it is the Aether subatomic particle pushing towards the earth's magnetic. Well there was a war of bloody physicists, between Newton and Einstein trying to explain gravity, without getting anything defined, then another monkey called Verlindo appeared with new Bs but nothing is concluded, otherwise there is no gravity.

    • @nazalostizsrbije
      @nazalostizsrbije 3 ปีที่แล้ว +1

      @@joseinfante5054 Form what free energy site did you get that info?

    • @joseinfante5054
      @joseinfante5054 3 ปีที่แล้ว

      @@nazalostizsrbije On google, KARL SCHAPPELLER DEVICE, Aether's force.

    • @sassanf4734
      @sassanf4734 2 ปีที่แล้ว

      Certainly deserves a better explanation, to my mind. The example with the gyro in the lab has a counter-weight. The example with Derek lifting the weight.... Why does the scale not react to the centre of mass moving up? Hmmm....

  • @terryfontaine4116
    @terryfontaine4116 3 ปีที่แล้ว

    Hi the wheel is creating lift. Like the cylinder (I can't remember the effect ) basically it's a very short cylinder if you put another wheel at the other end rotate it the opposite way it will stay the same height. As long as it spins the same speed..

  • @Duke49th
    @Duke49th 3 ปีที่แล้ว +1

    This great force/torque is why I am ever since afraid to work with huge grinding tools. Maybe nothing happens, but it feels like.