Motors: Speed, Torque & Horsepower
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- เผยแพร่เมื่อ 21 พ.ค. 2024
- Learn how speed, torque and horsepower determine the amount of work a motor can produce. You will be able to calculate the amount of horsepower needed to move loads.
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Very helpful. the conveyer belt, animation along with the real life examples helps make the relationship between the forces involved clear.
A 1075 rpm 1/3 hp a 1075 rpm 1/2 hp squirelcage blower turn how fast on each motor????????
nice explanation. given example makes it crystal clear
Perfect work
Thank you so much for the video. It give me confidence.
How To Calculate CC of Engine: th-cam.com/video/an_ffFDlbXc/w-d-xo.html
Great video..Easy to learn..
thanks for such a nice video
Nice explanation dude
comprehensive and detailed
IT WAS GREAT. THANKS ALOT FOR YOUR EXPLANTIONs
بسیار عالی بود. تشکر بخاطر توضیحاتتون.
Glad I scrolled down, I would have certainly failed that interview.
Thanks brother.... u got a new subscribers
How did you make these animations? They are pretty nice!
very good video...
Excellent
Thank You
Thank you for the explanation. Your video have helped me to finish my research. Good Job and thank you!
praying for your poor soul
you explain well .ur genius
A joule is a unit of energy while a watt is a unit of power
Great vid
No! Speed is how fast a motor rotates, NOT how fast it performs its work. POWER is how fast work is performed, and a spinning motor does no work until it is connected to a load. Also, 1055 Joules do NOT equal one horsepower, because a Joule is a measure of energy, not power. Energy is what is expended to do work, while power is the rate at which the energy is expended. One Watt (of power) expended for one second is equal to (the energy of) one Joule. 746 Watts equal one horsepower.
speed is how fast a motor rotates either with load or with no load if we are ta
After working with megajoule tables and wondering why we used decanewtons(as a weight measurement ) you make sense ,so basically horsepower is a force measurement like decanewtons?or is it like how fast you can exponentially increase momentum? or should i smoke another joint...lol
He turned hp to joules lool
Hi I have an 11kw motor with rpm of 2450 and want to design a gear box for a machine that will run at 420 rpm and output of 8kw. What am I supposed to take into consideration. Or simply how do I work it out? Thanks
Not sure why people can't get basic things right...
1. Torque is not a special kind of work. Torque does not even cause work at all before it involves motion.
2. Torque can be measured in lb-ft (pound foot) but that involves "pound force" and not "pound weight". Only if you assume standard gravity can you say that an object of 1 pound at 1 foot of arm will make 1 foot pound of torque. E.g. on the moon, you would have a surprise using such analogy.
3. One horsepower is not 1,055 Joules. Rather it is approx. 746 Joules per second.
4. "More horsepower is needed to produce the same amount of torque more quickly"...nonsense, torque is not a measure per time but simply a static measure of twisting force.
You are correct. There is a big mistake about friction forces too starting at 4:45.
About your #4. It seems like you haven´t understand this part correctly. Torque is not a measure per time, that part is correct, but power it is, so yes, more horsepower is needed to produce the same amount of torque more quickly.
good info. also good for insomnia patient.
This is a A+ video Just the info you need! wow.
Good
needs some cars racing in the video!
I am confused with all the formulas that i have come across. Can any one explain when we use the following formulas? power = torque(lb-ft) x speed (rpm) / 5252 and power(hp)= 2xpixrpmxtorque(Nm) / 60
nice
how did you assume "r" as moment-arm?
I have two Motors what is a half horse 1075 and the other is a third horse 1075 how fast will most squirrel cage turn on either motor
You are so wrong about friction because you are confusing sliding and static ones. At 4:45 you start to explain sliding friction force and its coefficient. But then at 6:03 you have the static friction force which moves the barrel, so (μ x Weight) is no longer correct. Indeed, this static friction causes the barrel to move unlike the sliding friction which always tries to stop the object.
Then same happens at 8:11 for an inclined surface. (Weight x μ x CosA) is a sliding friction which you have to overcome. But at 8:43 it is again the static friction which moves the barrel and is NOT equal to (Weight x μ x CosA), it equals to (Wight x SinA). It even has the direction of the motion unlike the sliding friction force which is opposite of the motion.
In common parlance pound-force feet (lbf-ft or lb-ft) is frequently conflated with foot-pounds (ft-lb); however, as a tutor of college mathematics and physics, I would damn near prick-slap anyone of my STEM tutees for getting those confused ;)
The English measure for work is ft-lb, not lb-ft. It is the dot product of force and distance; it is a scalar. On the other hand, the English measure of torque, the rotational analog for force, is lb-ft. It is the cross-product of distance and force; it is a vector.
Finally, for a clear and accurate explanation, view, "Why doesn't torque have the units of joules?" on the "Logically"-channel.
So sad this video made only for people in Myanmar, Liberia and US. I hope one day you make video like this for the rest of the world as well.
?
Bubba Sparks what?
Bubba Sparks fuck the rest of the world and your heathen units of measurement
It's a shame that such advanced country does not use the holy metric system :(
You people are religious with your measurement preferences, I wouldn't mind using metric because base 10 is easier math to do but there isn't any difference in actual measurements made, it's just a different base, you can build a bridge in meters or feet and it's still the same bridge.
if im using meters and newtons, does the 5252 in the formula change
Yes!
although it explains the concepts, the basic physics definitions here are incorrect.
What is 5252 digits in formula
How To Calculate CC of Engine
1:33 joules is NOT a unit of power, same as distance is not a measure of velocity
Actually a horse can deliver about 14 horsepower. The terminology "horsepower" doesn't help and results in confusion.
Most of the things are incorrect.
why Sir? please give more info.. i appreciate
@@yosef-yosef9414 For example: "1HP = 2545 BTU, 1HP = 1,055 joules"? @ 1:31
@@daweitowalk okay, i will try to understand i will watch it. and i'll get back to you..
i wanna know
@@daweitowalk and Thanks
cool
Arg!! My brain hurts, JOULES IS NOT A MEASURE OF POWER. That unit, Joule/s (J), is a unit for ENERGY. And while I'm at it, if you are talking physics at least use SI units.
How the coefficient of friction determined in the first place?
For dry friction, it must be tested.
Has a cyclist more torque in low RPM? As much RPM can you move the legs, do you have more power?
Thanks :)
Gerard Aliaga Navarro 1nnd8i
So simple as that TOrQ= if ride a bike fast ur T decrease, and if there person's weight increases the speed decrease and t increase and horse power also decrease, is this true
Pretty much all the video is wrong...
Also, how can you have the same physical quantity being transformed both into watts and into joules?!
You have a world ordience and you use imperial units?????
torque is a special kind of FORCE, not work, that produces rotation. small correction
Torque is a FORCE. You don't need ANY movement (rotation) to have force.
actually, you do. if there is a force, then there is its mass x its acceleration. what you are talking about is a "net" force. and if you have a net force, you then have rotation. sorry, its the law.
torque
no... tq doesnt need rotation..... try removing a stuck lugnut.... you apply well over 800lbs of tq but cant remove it.... the law of tq requires no movement....
thank you come again
well he kinda explain right.....if you take a look in kinematic....torque is defined by force multiple by radius or in vector quantity sinus angle of r.....(if you consider the si unit well the angle will might be in radian)
The unit of power is joules/second, not joules
can someone explain to me why 1HP = xxxxx Joules??? power = energy???
if a horse has bigger muscles, it can pull more weight which means torque.
I want to pull caravan.
Someone told me that we need car with a lot of torque.
I think he's wrong, couse we need power to pull this caravan couse Power makes acceleration.
Which vehicle pulls stronger?
vehicle A with constant 2000 rpm with 500Nm
or vehicle B with constant 13000 rpm with 100Nm?
In my opinion Vehicle B couse it has more power
(185hp) than vehicle A (142hp)
I know 13000rpm is irrational and better is to have car with a lot of low rpm power. But in this example vehicle B pulls stronger
Am I right?
This man should not be in charge of a horse or brewery.
Horse power is the amount of power that is needed to lift 100 kg to 0,75 m. So it is 750 W, 0,75 kW. ez.
NecumNaTo in one second. Otherwise its just work
NecumNaTo
Why we took 0.1 min instead of 1minute
Torque is not a "type of work" if anything its a type of force. Also you cannot convert horsepower to joules, since horsepower is a unit of power and joules a unit of energy. The list goes on...
There is so much wrong information in this video..
5252 ?
Pov online class nyo;)
How To Calculate CC of Engine: th-cam.com/video/an_ffFDlbXc/w-d-xo.html
I still can't understand this stuff. I love cars but when it comes to these terms I'm lost. My entire family are petrol heads my mom, dad and brothers so when they talk about this stuff it frustrates me. I just can't get the grip of this
The issue is the perpetual confusion of definitions of words like torque, power, work etc. They are pretty careless with word choice in this video. Learning to use their exact definitions isn't hard but it's crucial to understanding.
I'm guessing you want to understand Torque and Power, right? I'm happy to help!
yes i am, plz explain?
A horse can’t pull anything on ice because the horse does not have spikes in its shoes.
Start again
Just like 1 + 1 = 2
I failed in physics because i could never learn by a good source. I tried very hard in college days. i wish to do something in physics because this fascinates me how things work in the atmosphere. This subject is like 1st love to me.. i would want to learn more about it. I want to work towards Physics. I am good good teacher. I love explaining things which are related to Physics.
Anyone else feel bad for the horse?
so no one noticed this horse pulls a huge ass perfect cube of metal alone? Aliens? ***PLAY X FILES theme song >>> ILLUMINATI
Why don't they teach this stuff at school?
If they teach you physics then they will teach you this. This is the basics of classical mechanics. I learnt all this at school.
Depends where you live I suppose. For GCSE's this isn't needed so they don't teach it in physics
torque..hp..work..force..energy..joules...newton's...I am tired now..all opinions are useful but nobody gets a full grade.
Ok two minutes in the video and you've already sodomized most of the physics. I'm out! Don't learn from this video, it's wrong.
It’s moTor not modor ffs
0:02 "...that determine the type of *work* a motor can produce" I get that you're trying to use "work" to mean "type of measurable output", but that use doesn't belong in this video.You're about to talk about mechanical work.
0:07 "speed is defined as how fast the motor performs its work" Nope. That's power... which you're also about to talk about. Speed would just be defined as the rate of rotation.
0:33 "...the work is called torque. Torque is a special type of work..." Work is NEVER called torque. Torque is NOT work! Torque is angular force, or more intuitively, "rotational force".
im glad i've read the comments. are you sure about this? Thanks i'm a newbie here
i replace winding coil of my dc motor, a Thicker winding coil. due to more thicker, i only made 8 turns each pole, the dc motor ia working when no load, i can feel it's fast but when i place the remote car on the ground it can't carry load. please help me thanks
@@yosef-yosef9414 The twisting force (torque) produced by a stalled (not turning) electric motor is a direct function of how much total current is flowing around each pole - so thats the current flowing in the wire times the number of wraps that wire makes arount the pole. 1 amp through a wire with 100 turns would give the same torqe as 10 amps through a wire with 10 turns.
This current will flow according to ohms law (V=I×R).
As the motor turns faster, back EMF is generated, which you can think of as backwards voltage. It's as though the supply voltage were reduced, reducing the current that flows and thus, the torque produced.
By re-winding the motor with thicker wire two things probably happened.
1) You reduced the resistance of each coil.
2) You reduced the number of turns on each coil.
These cause several changes. Fewer turns means two things: back emf is weak and so no-load speed is high. Also more current will need to flow through the wire to create the same torque. Well the lower resistance should cause more current through the wire, but since you are probably powering the motor with a battery, the battery may be reaching limits of how much current it can provide (bateries have "internal resistance")
Basically you moved the rpm for best efficiency way higher, making it more inefficient when stalled or turning slow. The motor you have now could maybe perform the same as before if it was mated to a much higher ratio gearbox.
I hope this is making some sense.
@@drienkm Wow thanks Sir for your reply i appreciate that... i will try to comprehend your reply i'm not native english speaker. wait. Thanks☺️👌👍
Wtf this is so wrong. Joules and watts and horsepower are not all equal.
Watts = joules/second.
Burger-Units again... :/
I'm trying to find a video using the metric system. like, what ALL (almost) world uses you know?...
who the hell uses ft and lbs? nice lesson gone to waste.
exactly! fuck that!
Pretty much everybody in the United States, and the rest of the anglosphere. In other words, any of the countries that actually matter...
People who put men on the moon.
What? Just because you don't know how to use them??
@@gregisbased5205 Hahaha. BOOM.
Downvoted for unscientific units.
Wrong
Torque isn't work.
Force X Distance
the ironic thing is that most cool engines are buying by rich idiots and the poor who goes to work and apreciate every single engine detail in a shitty engine just because ita cheaper..
Bad illustration
This guy is going too far I think we all know you only need Speed and Power.