Answer
$W = 159J$
Work Step by Step
$W$ = Total work done on crate
$W_g$ = Work done by gravity
$W_n$ = Work done by normal force
$W_w$ = Work done by the worker
$W = W_g+ W_w + W_n$
$W =( -155J)+ 314J + 0J$
$W = 159J$
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 7 - Kinetic Energy and Work - Problems - Page 175: 63d
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