Conceptual Physics (12th Edition)

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

Chapter 2 - Reading Check Questions (Comprehension) - Page 35: 17

Answer

When an object is in mechanical equilibrium, the net force on it is zero, i.e., all the forces vectors on it add to zero.

Work Step by Step

This is defined on page 30.
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