A sphere of mass `m` and radius `r` is pushed onto the fixed horizontal surface such that
Channel: Doubtnut
Date: 30/08/2020

Please A sphere of mass `m` and radius `r` is pushed onto the fixed horizontal surface such that it rolls without slipping from the beginning. Determine the minimum speed `v` of its mass centre at the bottom so that it rolls completely around the loop of radius `(R + r)` without leaving the track in between -