A block of mass m is being pulled up the rough inclined by an agent delivering constant power P. The coefficient of friction between the block and the inclined is µ. The maximum speed of the block during the course of ascent is:

Question

G1 Physics · Accepted Answer

At the maximum attainable steady speed the acceleration along the incline becomes zero. Thus the agent force P/v balances mg sinθ+µmg cosθ, giving v=P/[mg(sinθ+µcosθ)]. Hence A.