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14 March, 13:36

Bales of hay of 40 lbf move up a conveyor set at 30° angle to the ground. If the hay bales are moving at 1.5 ft/sec, determine the power required to move each bale, neglecting any wind or air resistance.

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  1. 14 March, 16:34
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    The power required to move each bale is 30 lbf. ft/sec.

    Explanation:

    F = 40lbf * sin (30º)

    F=20lbf

    P = F*v

    P=20 lbf * 1.5 ft/sec

    P = 30 lbf. ft/sec
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