College Physics (4th Edition)

Published by McGraw-Hill Education
ISBN 10: 0073512141
ISBN 13: 978-0-07351-214-3

Chapter 2 - Problems - Page 69: 88

Answer

The reading on spring scale A is 120 N. The reading on spring scale B is 120 N.

Work Step by Step

The rope attached to the weight is holding up a weight of 120 N, so the tension in the rope must be 120 N. Therefore, the reading on spring scale B is 120 N. A rope is connected to both spring scale A and spring scale B. Since the reading on spring scale B is 120 N, the tension in this rope must also be 120 N, and therefore the reading on spring scale A is 120 N.
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