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28 August, 06:53

Find the work done by a force of 4 pounds acting in the direction of 41° to the horizontal in moving an object 5 feet from (0, 0) to (5, 0).

A. 13.1 ft-lb

B. 16.2 ft-lb

C. 15.1 ft-lb

D. 30.2 ft-lb

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Answers (1)
  1. 28 August, 10:23
    0
    F = 5 p

    d = 5 ft

    The work formula:

    W = F * d

    W = 5 p * cos 41° * 5 ft = 4 * 0.75471 * 5 = 15.09 ft-lb ≈ 15.1 ft-lb

    Answer: C) 15.1 ft-lb
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