# For your homework tonite, an unwinding yoyo problem

**URL:** <https://forums.yoyoexpert.com/t/for-your-homework-tonite-an-unwinding-yoyo-problem/312446>\
**Category:** Unrelated Discussion\
**Created:** [December 23, 2019, 1:44am UTC](https://forums.yoyoexpert.com/t/for-your-homework-tonite-an-unwinding-yoyo-problem/312446 "2019-12-23T01:44:32Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jhb8426](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/jhb8426/32/631_2.png) [@jhb8426](https://forums.yoyoexpert.com/u/jhb8426)\
**Post date:** [December 23, 2019, 1:44am UTC](https://forums.yoyoexpert.com/t/for-your-homework-tonite-an-unwinding-yoyo-problem/312446/1 "2019-12-23T01:44:32Z")

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An Unwinding Yo-Yo

> **[Solve Unwinding Yo-Yo Homework: No Slipping Allowed](https://www.physicsforums.com/threads/solve-unwinding-yo-yo-homework-no-slipping-allowed.892215/)**
>
> Homework Statement 
> We consider a yo-yo rolling down an incline, sloping with angle θ relative to horizontal. The yo-yo starts a distance d up the incline. The string is attached to a hook further up the incline, in such a way that it unwinds as the...

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**Author:** ![twitch77](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/twitch77/32/60219_2.png) [@twitch77](https://forums.yoyoexpert.com/u/twitch77)\
**Post date:** [December 23, 2019, 2:28am UTC](https://forums.yoyoexpert.com/t/for-your-homework-tonite-an-unwinding-yoyo-problem/312446/2 "2019-12-23T02:28:28Z")

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α = R∝  
ν = Rω  
τ (torque) = I∝  
Moment of Inerta (of uniform disc) = MR2  
h = d⋅sinθ  
Fgx = Mg⋅sinθ  
Fgy = Mg⋅cosθ

=  
Strawberry Milk.

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**Author:** ![vegabomb](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/vegabomb/32/199_2.png) [@vegabomb](https://forums.yoyoexpert.com/u/vegabomb)\
**Post date:** [December 23, 2019, 2:30am UTC](https://forums.yoyoexpert.com/t/for-your-homework-tonite-an-unwinding-yoyo-problem/312446/3 "2019-12-23T02:30:17Z")

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Depends on if the yoyo has any vibe.