University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 6 - Work and Kinetic Energy - Problems - Discussion Questions - Page 193: Q6.3


No, the total work is not zero.

Work Step by Step

The important point is that the reaction force does not act on the body, but on the rope. The total work ON THE BODY is due to the rope, and is nonzero. It is this positive work that increases the body’s kinetic energy.
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