Essential University Physics: Volume 1 (3rd Edition)

Published by Pearson
ISBN 10: 0321993721
ISBN 13: 978-0-32199-372-4

Chapter 7 - Exercises and Problems: 12

Answer

Please see the work below.

Work Step by Step

We know that (a) $U_{33}=mg\Delta y$ We plug in the known values to obtain: $U_{33}=62KJ$ (b) $U_{59}=mg\Delta y$ We plug in the known values to obtain: $U_{59}=(55)(9.8)(3.5)=111KJ$ (c) $U_{street}=mg\Delta y$ We plug in the known values to obtain: $U_{street}=(55)(9.8)(0.0)=0.0KJ$
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