Essential University Physics: Volume 1 (3rd Edition)

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

Chapter 6 - For Thought and Discussion - Page 105: 6



Work Step by Step

These are both forces leading to circular motion, so they are centripetal forces. This means that they are perpendicular to the path of the planet/comet moving. Since work can only be done when it is parallel to the motion of the object, no work is being done.
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