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 - Misconceptual Questions: 2

Answer

Choice C.

Work Step by Step

Nonzero work done by a force requires that the object has some motion along (or against) the direction of the force. In a circular orbit, an object feels a gravitational force that is always perpendicular to its own motion, and hence the force does no work.
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