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2 June, 23:06

sledge (including load) weighs 5000 N. It is pulled on level snow by a dog team exerting ahorizontal force on it. The coefficient of kinetic friction between sledge and snow is 0.05. Howmuch work is done by the dog team pulling the sledge 1000 m at constant speed?

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  1. 2 June, 23:18
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    2.5 x 10^{5} J

    Explanation:

    weight = 5,000 N

    coefficient of friction = 0.05

    distance = 1000 m

    how much work is done by the dogs pulling the sledge

    work done = force x coefficient of friction x distance

    work done = 5000 x 0.05 x 1000 = 2.5 x 10^{5} J
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