A block of mass m is placed at relative equilibrium on an inclined plane which itself is placed on a lift moving upwards with constant velocity . If the friction coefficient between block and plane is , find the instantaneous power supplied by friction to the block??
a) mgsin (2)/2 , b) mg sin^2, c) mgsin(2)/2 , d) mgcos^2
A solid sphere of mass m and radius R released from the top of an inclined plane such that it rolls down without slipping. If the coefficient of friction is µ and angle of inclination is ø with horizontal, then force of friction acting on the body is