Calculus: Early Transcendentals 8th Edition

Published by Cengage Learning
ISBN 10: 1285741552
ISBN 13: 978-1-28574-155-0

Chapter 12 - Review - Exercises - Page 843: 12

Answer

$87 \ joules $

Work Step by Step

Let us consider that $D$ be the displacement vector. Then we have: $D=\lt 5-1, 3-0,8-2 \gt=\lt 4, 3, 6 \gt $ Now, work $W=F \cdot D$ Thus: $W= \lt 3, 5, 10 \gt \cdot \lt 4, 3, 6 \gt \\=(3)(4) +(5)(3) +(10)(6) \\ = 87 \ joules $
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