Physics
Physics, 07.07.2020 21:01, kdog1738

A pulley system has an efficiency of 74.2%. If you perform 200 J of work, how much useful work does the pulley perform?
A. 52 J
B. 113 J
C. 148 J
D. 200 J
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Answers: 2

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A pulley system has an efficiency of 74.2%. If you perform 200 J of work, how much useful work does...

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