ฝัง
- เผยแพร่เมื่อ 21 ก.ย. 2014
- 052 - Torque
In this video Paul Andersen begins by discriminating between translation and rotational motion. He then explains how a torque is the product of the lever arm and the force perpendicular. The lever arm must be perpendicular to the axis of rotation and the force must be perpendicular to the lever arm.
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Music Attribution
Title: String Theory
Artist: Herman Jolly
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All of the images are licensed under creative commons and public domain licensing:
“Balancing Act.” PhET. Accessed September 4, 2014. phet.colorado.edu/en/simulatio....
MidnightLightning. English: SVG Version of Adjustable Wrench.jpg, April 14, 2009. Own work. commons.wikimedia.org/wiki/Fil....
Technik, RusCloud-SVG fileThe Lexikon der gesamten. English: SVG Variant of L-Door.png., September 14, 2010. Own work. commons.wikimedia.org/wiki/Fil....
better than Khan Academy, without confusion, clear and complete explanation!
thank you for all you do Mr. Anderson, you help me all the time and you don't even know! Thank God for people who enjoy helping others like you!
once again, you're out there doing God's work
***** no he's teaching us poor students how to understand this stuff which is God's work
no, he's teaching evidence-based science, which is the opposite of a religion that invented god
Haha you're Funny , God Is Dead, but can live in you're heart wenn you're afraid of the world that can help you, carrefull of skyzophrenia XD (sorry my righting is not perfect).
guide me about resultant movement and movement of inertia
Thank you, sir.
a really helpful, brief yet short, understandable explanation. Thank u!!
You are the best Mr Anderson, you helped me out with bio1A and now that I need help w/ physics 4A, you’re helping me out again!! The best lecture, so clear and straight to the point! a hero doesn’t always wear a cape.
You are ALWAYS helpful Bozeman Science !!! I`m a pre-med student, and I always find myself looking through your videos whenever I need to refresh my science knowledge. I love your videos!!
+sweetienena ME too! :)
Are you a doctor now 😍 im currently studying for the med entrance exam it is my dream to be a doctor
Thank you so much. This has been the best explanation of torque I've found and you presented the concept in such a clear manner especially with the wrench and the visuals. Seriously, thank you.
Very well thought-out presentation. Concise, complete, and the real-world examples connected accurately with the abstract concepts.
Very informative. Thank you for such a subtle explanation, i finally understood what torque means.
Best explanation I've seen on TH-cam so far.
I love watching your videos because they are helpful. perfect explanation
You are amazing professor, thanks to you I am able to pass my physics exams. thank you!
I've heard about torque in cars, but didn't search for what it meant; this video helped me understand the concept. Thank you! :)
You are the best teacher ever. THANKS, SIR!
Beautiful work, well done!
Watched one of your AP Bio reviews before my exam and got a 4 or 5. Can't remember. Now I'm at Purdue, watching this before my Physics exam. Hopefully similar results. Thank you!
nice lie
Aziz Kash its a lie cause he’s doing better than you?
@@rijulranjan8514 😂😂
you're a good teacher....its like you're talking to my heart
your explanations were very clear! thank you.
man this torque confused me for a whole year. Now i totally get it. thank you.
man, your quite good at explaining.
summed up three hours worth of struggle with pre-med physics in one video, thank you omg
Headed off to aviation mechanic and engineering school. Your videos are definitely a good refresher!
So clear and easy to understand thank you! Other people's videos seem so convoluted lol thank you great job!
thank you so much. you are just insane. i have no words to describe the help you do in here.
Thank you! You explained this in a very simple way. I love it
I literally love you so much for this video! I didn't understand it at all, but now I completely comprehend it! Thank you!
bozeman is a beast, that was amazing.
Great review, solid and concise lecture
You are amazing, students in 2021 still looking up to you :)
Its always helpful Mr Andersen!
Thank you a lot for the amazing lesson,cleared a lot of things for me
Loved it Mr Anderson... .
I think your video is really good. I worked in an hardware store so i never know how to calculate or know what torque is. Thanks brother you help me alot.
I've subscribed, you explanation is outstanding) thank you!
You are cracked and goated at teaching physics, saved my life. Subscribed, cheers.
so helpful! thank you so much for all your videos.
Awesome Video. One of the best video on such a difficult topic..
Great video...thanks for explaining it simply...now I know how to read Nm values in cars !
Thank you man, you do a great job please keep it up
Holy cow, this video was awesome! Thank you, Sir
Thank you so much ..
It is much more helpful .. cant thank you enough
Holy fuck this video is amazing. You are brilliant. I finally understand torque.
Don't use expletives
U r brilliant person ..god has gifted u a very explanative mind and voice....anyone hears that just really say...oh I got that ..that was easy to learn ...thnks again ..u r always helpful!
Thank you for a good explanation of how it works! I still don't know WHY it works and will continue to assume it's magic.
I mean you can try it yourself with a wrench trying to unloosening a bolt when you place your hand on the wrench closes to the bolt vs. when you have your hand further out... You can feel the significant difference in the amount of force that you have to apply...
***** I've opened a door before; I'm not doubting that torque exists. The question isn't "does this happen?," where the answer is obvious, but rather "why does it happen the way it does?" My answer to the latter question is in my next reply.
Aηακιη Μεmεωαlκεя You're just rephrasing the question and presenting it as an answer, though that's probably my fault for not specifying an actual question. My real question was intended to be "why does changing the lever arm change the amount of work done by the same force?" Your answer that a closer point to the pivot "has" to move less distance implies some law of nature that isn't covered in your explanation, nor in the video. A point closer to the pivot DOES move less distance than a point further away under the same force, but why? Someone may be tempted to jump in and tell me that I missed the point and that this law of nature I'm looking for is the equation: torque equals the product of the force and the radius, but that's only describing the observation, and now we're in a circle.
After thinking about it some more, I've decided on an answer that satisfies what I was personally curious about. As shown in the video, applying a force to the center of gravity/center of mass causes translational motion in an unfixed body. Applying the force off-center produces both translational and rotational movement. The part I was missing is that the work being put into linear motion doesn't change when the object is attached to an axis. Pushing a door at a point closer to its hinge puts more work into moving the hinge linearly, but the hinge resists this motion and the work is wasted. That's why it's more efficient to have a longer lever arm: not that there's more work being done, but there's a more advantageous ratio of rotational work over translational. If this is true, though, I don't think there's a lever big enough to move the world, as some have claimed.
Jamie Den Adel Maybe think about it this way... Lets say the door is perpendicular to you as it hangs on top of you, ik it's weird but hear me out... You're trying to do everything you can to bend the door from its hinges. Now you have 3 handles, pretty much one is the closes to the hinge, the other one is at the middle of the door, and the last one is the furthest away from the hinge. Which handle would you choose in order to try to bend the door? Idk hopefully that helps you out because the ends of the door is where you are most likely to bend the entire door if not knock it off of it's hinges...
I know exactly what you mean.
It is weird. Most people just memorize this lever effect. They don't think about the fundamentals..... They assume it is some kind of black magic. As if you would gain some energy like in a perpetuum mobile.
I don't want to confuse you, but it could have something to do with centripetal force. Centripetal force is the force that is responsible to keep an object on its circular motion. (look it up if you don't know what it is)
The closer a force is applied to an object the smaller the centripetal force gets. So the Torque also would get smaller.
After all centripetal force ( or torque) is caused by the inner molecular bindings of a material that holds the system together.
Yes. All your videos are helpful
Paul Anderson, your life has been worthwhile!
For some reason (PC?) my community college hired an intro Pheeseeks teacher from Guadalajara and you no can onderstan heem!
Your examples are too genuine sir
Best teach🙌
Hats off to your explanation 🙌
Dudes carried me through, AP bio, higher end college bio, chemistry, and now biomechanics. He truly does it all😂
You, sir, are a hero
You are genius Mr.Andersen.
I love you Mr. Anderson !!!
Thank you, this video was fantastic!
Thank you sir for your very clear and informative videos. I have a questions about the last example involving the seesaw.
After the system was at rest you applied a torque that is equivalent to the torque created by the 10Kg mass, meaning thatthe net torque on the system at that moment was zero: shouldn't this mean that the system's velocity must have remained constant; therefore the system shouldn't have moved? How come the seesaw started turning if the net torque was zero? doesn't it violate newton's first law?
Thanks again for your great videos :)
god bless you mr.anderson
Great explanation
At 3:04 I thought that the door was going to hit his head
Lol
Thank you. It was a huge help. Keep going
THANK YOU SO MUCH, I FINALLY UNDERSTAND THIS! this relieved a lot of the stress I was having because of my upcoming test.
Great simple explanation!
Excellent and clear explanation.
clear explanations as always
Very informative. Thank you sir.
THANK YOU FOR SAVING OUR LIVES!
what a great educational video... I love this
Very clear and helpful, thanks!
Thank you sir, it was very helpful!
Its very helpful.
Thank you.
great presentation!
Excellent explanation !
Awesome video, hope this will get me through my Mechanics exam tomorrow!
Thankyou so much for this!
Awesome vid. Thank you!
Finally, someone who knows how to teach!!! We need more of those
I know how to teach tho - why didn't I get any mention? :,(
You're amazing ! I understand torque from someone who's not even speaking my own language :)) That's how good this tutorial is !!!
Am I amazing?
Paul Anderson you are truly an excellent teacher. Thank you for taking time to clearly explain concepts.
thx for that, it really helped me
thank you very much God bless you..
You deserve more subscribers
The only one that helps me understand physics!!!
That was very helpful!
thanks for the simple clear explanation...how can I know which torque should be applied to which materials or applications?
Thank you, you're an absolute physics unit
:) Thank you so much
Stay Blessed
:) Stay Happy
Totally helpful
Never knew torque before
And 1 video is enough for me now
Thanks
faqeer hasnain exactly
thank you that was really helpful
God bless you!
very good man, nice video
Great thanks you boss.
It's very good lesson and also too much teching techniques. Keep it up.
That amazing video sir nice I got understand all concepts
You are amazing.
cayneallen
The best video I came across , just well explained , I dono which are those piggies woo disliked the video . Thank you so much sir ❤️
Good explanation
Thnx sir... Helpful as ever...
thanks for sharing this video..watching here from the Philippines :)
What if the system is slanted how do we calculate
I am currently studying for my entry nuclear engineering exam, i never ever thought I would be in this position ever in my life. And yet here I am, please pay attention. You will have all your life to laugh play and be idiots but you only get this Opportunity at this age once, it’s important!
God bless you🙏🏻
best teacher in this world
if it is sitting in space it has no potential energy then what force is acting on it in order for the wrench to have a translataional motion