Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 8 - Rotational Motion - Questions: 5

Answer

No. No.

Work Step by Step

Even if the net force on a system is zero, the net torque can be nonzero. See the top diagram. The net force is zero (the forces cancel), but there is a net torque about the center of the rod that would start it rotating. Even if the net torque on a system is zero, the net force can be nonzero. See the bottom diagram. The net torque is zero (the object wouldn’t start rotating), but there is a net force that would accelerate the object linearly.
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