A simple pendulum of length l and consisting of a ball of mass m is released from a position making an angle `theta=cos^(-1)` (0.8) with the vertical and strikes at its lowest position a block of mass M resting on a rough horizontal plane. If the coefficient of kinetic friction between the plane and the block is 0.2 find
(a) How long the block will move along the plane, if the ball of the pendulum rebounds to an angle `beta=cos^(-1)` (0.9)A
(b) The coefficient of restitution, use `(M)/(m) =10` and 1= 1 m

Answer

`[2.916 cm,0876]`