Physics - Rotation Question with Solution | TestHub

A plank of mass ${\mathrm{M}}_1$ on which ring of mass ${\mathrm{M}}_2$ is placed is pulled by applying a force 'F' newton such that acceleration of plank is $2\mathrm{m}/{\mathrm{s}}^2$. The friction between plank and ring is sufficient to provide pure rolling and plank is of length 2 m . Initially ring is at extreme right end of plank. Find the time (in sec.) after which ring will fall from the plank.