Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 6 - Work and Energy - Problems: 26

Answer

2100 J.

Work Step by Step

Find the change in gravitational PE. $$\Delta PE = mgy_f-mgy_i=mg(y_f-y_i) = (54 kg)(9.8 \frac{m}{s^2})(4.0 m)=2100 J$$
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