Answer
$\Delta U_g = -2.0~J$
Work Step by Step
We can find the change in gravitational potential energy:
$\Delta U_g = mgy_2-mgy_1$
$\Delta U_g = mgy_2-0$
$\Delta U_g = (20~N)(-0.10~m)$
$\Delta U_g = -2.0~J$
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 212: 130e
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