(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A marble of mass M and radius R is rolled up a plane of angular θ. If the initial velocity of the marble is v, what is the distance l it travels up the plane before it begins to roll back down?

2. Relevant equations

3. The attempt at a solution

I would like to know the details of the motion. The answer is l≈1.3m. But I try the equation -mglsinθ=0-(1/2m^{v}+1/2I^{ω}), the result is about 1.5m. I know it is not the correct way, but I am just confused about the critical condition and how the friction is canceled out.

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# Homework Help: A problem about angular momentum

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