Answer
$18J$
Work Step by Step
$W=F_{1}\Delta x_{1}+F_{2}\Delta x_{2}=\left( +3.0\right) \times \left( 4-1\right) +\left( -3.0\right) \times \left( 1-4\right) =18J$
Fundamentals of Physics Extended (10th Edition)
by Halliday, David; Resnick, Robert; Walker, Jearl
Published by
Wiley
ISBN 10:
1-11823-072-8
ISBN 13:
978-1-11823-072-5
Chapter 8 - Potential Energy and Conservation of Energy - Problems - Page 208: 76a
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