Answer
710 ft-lb
Work Step by Step
F= 15 pounds, d= 52 feet and $\theta= 25^{\circ}$
Work W= $Fd\cos\theta= 15\,lb\times52\,ft\times\cos 25^{\circ}$
=710 ft-lb.
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
Published by
Cengage Learning
ISBN 10:
1111826854
ISBN 13:
978-1-11182-685-7
Chapter 2 - Section 2.5 - Vectors: A Geometric Approach - 2.5 Problem Set - Page 108: 48
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