The pulley has an efficiency of 78%. How much useful work does the pulley do if you perform 775 J of work on the pulley

Question

The pulley has an efficiency of 78%. How much useful work does the pulley do if you perform 775 J of work on the pulley

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Khang Minh 4 years 2021-08-24T14:02:47+00:00 1 Answers 27 views 0

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  1. Philomena
    0
    2021-08-24T14:04:05+00:00
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    Answer:

    605 J

    Explanation:

    Efficiency = work out / work in

    0.78 = W / 775 J

    W = 605 J

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