Torque 

+sweetienena ME too! :)

Are you a doctor now 😍 im currently studying for the med entrance exam it is my dream to be a doctor

***** 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.

nice lie

Aziz Kash its a lie cause he’s doing better than you?

@@rijulranjan8514 😂😂

Am I amazing?

I know how to teach tho - why didn't I get any mention? :,(

faqeer hasnain exactly

Don't use expletives

Lol

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.

cayneallen