Question: A courier uses a bicycle with rear wheel radius 35.6 cm and gear radius 4.00 cm. If a force of 155 N is applied to

A courier uses a bicycle with rear wheel radius 35.6 cm and gear radius 4.00 cm. If a force of 155 N is applied to the chain, the wheel rim moves 14.0 cm.

(a) If the efficiency is 95.0%, what is the ideal mechanical advantage of the wheel and gear?

(b) What is the actual mechanical advantage of the wheel and gear?

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