A 1400 kg block is lifted at a constant speed of 4 cm/s by a steel cable that passes over a massless pulley to a motor-driven winch. The radius of the winch drum is 30 cm and the winch drum has a mass of 1700 kg.
What force must be exerted by the cable?
What torque does the cable exert on the winch drum?
What is the angular velocity of the winch drum?
What power must be developed by the motor to drive the winch drum?