# Rotating ball inside rotating cylinder.

1 vote
30 views

How do I proof:

Textbook solution :

No, but I derived that for a ball in the pure rotation along incline with inclination $\theta$, possess acceleration along incline given by $a=\dfrac{F/m}{1+\frac{k^2}{R^2}}$, where $F$ is a force along incline acting at CM (excluding frictional), $k$ is its radius of gyration. Using this I understand that $g\sin\theta$ term but why $\alpha r$?