# A block of mass m is gently placed groove in a turn table. Vertical walls of groove are smooth while coefficient of kinetic friction between bottom surface of groove and the block is μ = 0.12. The turntable is rotating rapidly about the vertical axis passing through the centre. Find the speed gained by the block in 2 s.

Q: A block of mass m is gently placed groove in a turn table. Vertical walls of groove are smooth while coefficient of kinetic friction between bottom surface of groove and the block is μ = 0.12. The turntable is rotating rapidly about the vertical axis passing through the centre. Find the speed gained by the block in 2 s.

(a) 1 m/s

(b) 2 m/s

(c) 3 m/s

(d) 4 m/s

Ans: (d)