Torque: Crash Course Physics #12
Get Your Crash Course Physics Mug here: http://store.dftba.com/products/crashcourse-physics-mug What is torque? This is one of those things that you may have heard about in passing but never...
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You have a box. A ring. And a marble. And they’re all at the top of a ramp. Because you know how physics loves ramps. Especially hypothetical ramps! So, let’s say this ramp would allow for static friction, but not kinetic friction. Now, you let go of all of these objects at the same time, so that the box starts sliding, and the ring and marble start rolling, all at once. So, which of them will hit the bottom first? The answer might not be what you’d expect. I mean, we already know that when you drop two objects from the same height -- in a vacuum at least -- they’ll hit the ground at the same time. Even if you tried it with a feather and a bowling ball. So you might think that all of the objects would get to the bottom of the ramp at the same time. ...
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You have a box. A ring. And a marble. And they’re all at the top of a ramp. Because you know how physics loves ramps. Especially hypothetical ramps! So, let’s say this ramp would allow for static friction, but not kinetic friction. Now, you let go of all of these objects at the same time, so that the box starts sliding, and the ring and marble start rolling, all at once. So, which of them will hit the bottom first? The answer might not be what you’d expect. I mean, we already know that when you drop two objects from the same height -- in a vacuum at least -- they’ll hit the ground at the same time. Even if you tried it with a feather and a bowling ball. So you might think that all of the objects would get to the bottom of the ramp at the same time. ...
