Physics - Circular Motion Question with Solution | TestHub

A block of mass m slides on a frictionless horizontal table. It is constrained to move inside a ring of radius 1 m which is fixed to the table. At $\mathrm{t}=0$, the block is moving along the inside of the ring i.e., in the tangential direction with velocity 10 m/s. The coefficient of friction between the block and the ring is 0.1 . The velocity of the block at $\mathrm{t}=4\sec$ (in $\mathrm{m}/\mathrm{s}$ ) is