Problem F14-12 Dynamics Hibbeler 13th (Chapter 14) Engineering Dynamics - Power and Efficiency

Principal of work and energy.
At the instant shown, point P on the cable has a velocity v_p = 12 m/s, which is increasing at a rate of a_p = 6 m/s^2. Determine the power input to motor M at this instant if it operates with an efficiency epsilon = 0.8. The mass of block A is 50 kg.