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1 July, 06:34

A factory worker moves a 30.0 kg crate a distance of 4.50 m along a level floor at constant velocity by pushing horizontally on it. the coefficient of kinetic friction between the crate and the floor is 0.250. how much work is done on the crate by the worker's push?

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  1. 1 July, 06:46
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    Force applied to overcome friction is 30•9.81•0.25=73.575N

    Work is F•d

    W=73.575•4.5=331.0875J
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