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1 April, 05:39

Kelly carried a box weighing 10 N the 200 meters from his car to his new house. George took the box from Kelly and carried it up the 3 meter tall flight of stairs. Who did more work?

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  1. 1 April, 06:07
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    While moving box from car to house

    W = F * d * cosine (90 degree)

    = 10N * 200m * 0

    = 0Nm

    While lifing 3m tall flight of stairs

    W=F*d*cosine (0 degree)

    = 10N * 3m

    = 300 Nm

    George did more work
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