A professional cyclist rides a bicycle that is 92 percent efficient. For every 100 joules of energy he exerts as input work on the pedals, how many joules of output work are used to move the bicycle?

Question

Ari Valentine

Physics

16 April, 10:46

A professional cyclist rides a bicycle that is 92 percent efficient. For every 100 joules of energy he exerts as input work on the pedals, how many joules of output work are used to move the bicycle?

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Answers (1)

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Joseph Franco · Answer 1

Since Efficiency = 92% = 0.92

Efficiency = (Work Output) / (Work Input)

0.92 = Wo / 100

Wo = 0.92 * 100

Wo = 92 J.

Therefore 92J is used to move the bicycle.