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29 November, 14:24

A window washer stands on a scaffolding 30m above the ground. If he did 23,520J of work to reach the scaffolding, what is his mass?

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  1. 29 November, 14:47
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    W. d = mgh

    23520 = m * 9.81 * 30

    23520 : (9.81 * 30) = m
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