An 1800-rpm motor drives a camshaft 360 rpm by means of a belt drive. During each revolution of the cam, a follower rises and falls 20 mm. During each follower upstroke, the follower resists a constant force of 500 N. During the down strokes, the force is negligible. The inertia of the rotating parts (including a small flywheel) provides adequate speed uniformity. Neglecting friction, what motor power is required? You should be able to get the answer in three ways: by evaluating power at the
(a) motor shaft,
(b) camshaft, and
(c) follower.