A 1700-kg block is lifted at a constant speed of 11.0 cm/s by a steel cable that passes over a massless pulley to a motor-driven winch. The radius of the winch drum is 31 cm.   (a) What is the magnitude of the force exerted by the cable? (solved)16.68 kN(b) What is the magnitude of the torque exerted by the cable on the winch drum? (unsolved)(c) What is the angular velocity of the winch drum? (solved).35 rad/s(d) What power must be developed by the motor to drive the winch drum? (unsolved)

Question

A 1700-kg block is lifted at a constant speed of 11.0 cm/s by a steel cable that passes over a massless pulley to a motor-driven winch. The radius of the winch drum is 31 cm.

 
(a) What is the magnitude of the force exerted by the cable? (solved)
16.68 kN

(b) What is the magnitude of the torque exerted by the cable on the winch drum? (unsolved)

(c) What is the angular velocity of the winch drum? (solved)
.35 rad/s

(d) What power must be developed by the motor to drive the winch drum? (unsolved)

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