I was holding a rubber band ball in my hand earlier and tossing it up in the air at about eye level. I noticed that I could see the shape of individual rubber bands on the axis of rotation on the outside of the ball but the edges of the ball were blurry. This got me thinking.. is a ball spinning slower near the axis than it is at the outer edge? Is the earth spinning faster at the equator than it is at the poles? If speed is d/t then the math makes sense to a layman like me that the ball would be rotating slower at the center and faster on the edges. Please help.
edit: holy shit. balls are fascinating.
In: 439
take the sphere. then imagine an axis, like a cilinder rod, passing through the middle of the sphere. the farther you are from that axis, horizontally, the faster you will go, because you’ll need to cover the same angle at the same time, but in a greater perimeter (distance). the closer you are to that axis, the slower you move, because the perimeter is smaller. all parts of the sphere rotate at the same time, but specific points in the circle will be faster or slower depending on how far away from the central axis they are.
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