Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (3rd Edition)

Published by Pearson
ISBN 10: 0321740904
ISBN 13: 978-0-32174-090-8

Chapter 6 - Dynamics I: Motion Along a Line - Conceptual Questions: 17

Answer

The friction force on the crate points toward the north. The friction force is not zero.

Work Step by Step

Since the crate moves without slipping, the force of static friction is causing the crate to accelerate at the same rate as the truck. Since the crate is accelerating toward the north, then the friction force on the crate must point toward the north. Since the crate is accelerating toward the north, the friction force on the crate is not zero (otherwise, the crate would not accelerate).
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