Question: (a) Gear is a common component that can be found in a mechanical system. By the aid of sketches, explain how a gear is

(a) Gear is a common component that can be found in a mechanical system. By the aid of sketches, explain how a gear is better than a roller in transmitting power? (b) A spur pinion has a diametral pith of 9 teeth/in, 45 teeth, and rotates at 800 rev/min. The pinion drives another spur gear at a speed of 400 rev/min. Find the number of teeth on the driven spur gear and the theoretical center-to-center distance.

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