Physics behind looping?

bhagwad · November 19, 2015, 5:33pm

rizki_yoist:

Yossarian hit the nail in the head, but for the sake of simplicity, I’ll re-explain it to you.
If you hold a responsive yoyo in front of you, let’s say you’re holding it with the string facing properly, palm facing down, and just let it fall, the yoyo will spin backward… when the yoyo return and you catch it, the string will roll the opposite way (backward) because the yoyo only spins one way. If you let it fall one more time, the yoyo will spin forward and when you catch it, the string will roll forward too.
Now since loops “revolve” around your hand in one way/direction (outward from bottom, return from the top), the yoyo needs to flip to continue the revolution. It’s not impossible to loop with no flipping, BUT it will have to spin forwards and backwards alternatively, and that is more difficult than simply flips.

A butterfly yoyo will be harder to flip because the wall of the yoyo is far from the rims, which means it’s too “stable” to flip, it’s like pushing a door closer to the joints, it will feel heavier. Try doing trapeze with a classic shaped yoyo it can be tilted a lot easier than a butterfly shaped yoyo.

Yeah, I think I’m beginning to see how this works. Thanks for explaining it to me!

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Physics behind looping?

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