Problem

The motor M is at rest when someone flips a switch and it starts pulling in the rope. The...

The motor M is at rest when someone flips a switch and it starts pulling in the rope. The acceleration of the rope is uniform and it takes 1 s to achieve a retraction rate of 4 ft/s. After 1 s the retraction rate becomes constant. Determine the tension in the cable during and after the initial 1 s interval. The cargo C weighs 130 lb, pulleys A and B each weigh 12 lb, and the weight of the ropes is negligible. Neglect friction in the pulleys and the rotational inertia of the pulleys.