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- Опубліковано 9 лют 2025
- 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.e....
MidnightLightning. English: SVG Version of Adjustable Wrench.jpg, April 14, 2009. Own work. commons.wikimed....
Technik, RusCloud-SVG fileThe Lexikon der gesamten. English: SVG Variant of L-Door.png., September 14, 2010. Own work. commons.wikimed....
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!
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
a really helpful, brief yet short, understandable explanation. Thank u!!
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.
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 😂😂
Thank you again Mr. Anderson for clarifying 4 weeks of technical college in one 10 year old video.
summed up three hours worth of struggle with pre-med physics in one video, thank you omg
Best explanation I've seen on UA-cam so far.
I've heard about torque in cars, but didn't search for what it meant; this video helped me understand the concept. Thank 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.
You are amazing professor, thanks to you I am able to pass my physics exams. thank you!
You are amazing, students in 2021 still looking up to you :)
Headed off to aviation mechanic and engineering school. Your videos are definitely a good refresher!
Dudes carried me through, AP bio, higher end college bio, chemistry, and now biomechanics. He truly does it all😂
man this torque confused me for a whole year. Now i totally get it. thank you.
Very informative. Thank you for such a subtle explanation, i finally understood what torque means.
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?
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? :,(
Very well thought-out presentation. Concise, complete, and the real-world examples connected accurately with the abstract concepts.
I love watching your videos because they are helpful. perfect explanation
So clear and easy to understand thank you! Other people's videos seem so convoluted lol thank you great job!
You are the best teacher ever. THANKS, SIR!
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!
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.
You are cracked and goated at teaching physics, saved my life. Subscribed, cheers.
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.
THANK YOU SO MUCH, I FINALLY UNDERSTAND THIS! this relieved a lot of the stress I was having because of my upcoming test.
The best video I came across , just well explained , I dono which are those piggies woo disliked the video . Thank you so much sir ❤️
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!
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!
Awesome Video. One of the best video on such a difficult topic..
Thank you! You explained this in a very simple way. I love it
Your examples are too genuine sir
you're a good teacher....its like you're talking to my heart
man, your quite good at explaining.
Great video...thanks for explaining it simply...now I know how to read Nm values in cars !
Holy cow, this video was awesome! Thank you, Sir
Great explanation
At 3:04 I thought that the door was going to hit his head
Lol
I literally love you so much for this video! I didn't understand it at all, but now I completely comprehend it! Thank you!
You are genius Mr.Andersen.
Best teach🙌
Hats off to your explanation 🙌
Paul Anderson you are truly an excellent teacher. Thank you for taking time to clearly explain concepts.
Awesome video, hope this will get me through my Mechanics exam tomorrow!
Holy fuck this video is amazing. You are brilliant. I finally understand torque.
Don't use expletives
bozeman is a beast, that was amazing.
Never knew torque before
And 1 video is enough for me now
Thanks
faqeer hasnain exactly
You, sir, are a hero
Beautiful work, well done!
The only one that helps me understand physics!!!
I love you Mr. Anderson !!!
what a great educational video... I love this
Learning from youtube is way easier than hearing your teacher talk gibberish
Its always helpful Mr Andersen!
THANK YOU FOR SAVING OUR LIVES!
Great review, solid and concise lecture
your explanations were very clear! thank you.
Loved it Mr Anderson... .
god bless you mr.anderson
Totally helpful
Actually the main reason why the door knob is located on the opposite side of the door hinge is not mainly because of torque but because it easier to make a locking mechanism from the door to the door frame. You make great videos Btw
better example would be untightening a tough bolt using a breaker bar
That is precisely because of torque. The linear force on that locking mechanism is minimized by locating the locking mechanism as far from the axis of rotation as possible.
Excellent and clear explanation.
thanks a lot without you I would have failed
Yes. All your videos are helpful
Thank you a lot for the amazing lesson,cleared a lot of things for me
so helpful! thank you so much for all your videos.
I've subscribed, you explanation is outstanding) thank you!
best teacher in this world
great presentation!
Great simple explanation!
Excellent explanation !
Thank you so much ..
It is much more helpful .. cant thank you enough
Very clear and helpful, thanks!
clear explanations as always
Thank you. It was a huge help. Keep going
That amazing video sir nice I got understand all concepts
thanks for sharing this video..watching here from the Philippines :)
Thank you, this video was fantastic!
Thank you man, you do a great job please keep it up
You are amazing.
cayneallen
What a great torque on this subject...
Awesome vid. Thank you!
Great thanks you boss.
It's very good lesson and also too much teching techniques. Keep it up.
Very informative. Thank you sir.
very good man, nice video
The doorknob is on the outside of the door because it is more convenient, not because of torque. A doorknob on the outside is near where you enter and leave.
thx for that, it really helped me
Its very helpful.
Thank you.
this dude's a legend
That was very helpful!
Good experiment
thank you very much God bless you..
You are going to get 1M subs, how are you feeling?
Thankyou so much for this!
Thank you sir, it was very helpful!
This is very neatly done, but you seem to have taken as axiomatic that if two 'torque' values are the same (eg 50x8 and 100x4) then the torques are equivalent, or 'balanced'. It would be nice if, at some point, you took time to justify this assumption, eg replaced the axiom by what I feel is a more fundamental one involving 'balanced forces', ie something akin to centre of gravity.
You deserve more subscribers
Thnx sir... Helpful as ever...
Good explanation