If in the above problem the block is replaced by a small spherical ball of radius r and the cup is fixed, what will be the period of oscillations of the ball?

If in the above problem the block is replaced by a small spherical bal

1.	If in the above problem the block is replaced by a small spherical ball of radius r and the cup is fixed, what will be the period of oscillations of the ball?
Answer» ANSWER :`T=2pisqrt(7/(5).(R-r)/(8))`