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?

The bicycle is 92% efficient, meaning 92% of energy input is converted to useful (in this case kinetic) energy. Just find 92% (=0.92) of the given input. So: 100*0.92 = 92J

Answered by dannyboy49 | 2024-06-10

The output work used to move the bicycle is 92 joules, calculated by multiplying the input work of 100 joules by the efficiency of 92%. This indicates that 92% of the energy exerted by the cyclist is converted into useful work for moving the bicycle.
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Answered by dannyboy49 | 2024-12-26