Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 2 - Reading Check Questions (Comprehension): 19

Answer

The table provides 15 N of support force. The net force on the book is zero.

Work Step by Step

The net force on the book is zero because it is at rest, in mechanical equilibrium. The support force from the table cancels the weight of the book, so it has the same magnitude and points in the opposite direction, or upward.
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