Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)

Published by Pearson
ISBN 10: 0133942651
ISBN 13: 978-0-13394-265-1

Chapter 12 - Rotation of a Rigid Body - Exercises and Problems: 19

Answer

The net torque about the axle is 5.0 N m

Work Step by Step

We can find the net torque about the axle. Let $F_1$ be the 50-N force which is directed downward. $\tau_{net} = \sum \tau$ $\tau_{net} = r_1~F_1 + r_2~F_2$ $\tau_{net} = (0)(50~N)+(0.10~m)(50~N)$ $\tau_{net} = 5.0~N~m$ The net torque about the axle is 5.0 N m.
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