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23 December, 13:08

A suitcase is pulled 28 feet along a flat sidewalk with a constant upward force of 80 lb at an angle of 23degrees with the horizontal. Calculate the work done.

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  1. 23 December, 13:10
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    2795.3 J

    Explanation:

    distance, d = 28 feet = 8.53 m

    Force, F = 80 lb = 356 N

    Angle, θ = 23°

    Work = F x d x cos θ

    W = 356 x 8.53 x cos 23

    W = 2795.3 J

    Thus, the work done is 2795.3 J.
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