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 7 - Newton's Third Law - Conceptual Questions - Page 176: 15

Answer

Block A's acceleration in case b is greater than block A's acceleration in case a.

Work Step by Step

Consider a free-body diagram for the 10-N block in case a. Since the 10-N block is accelerating downward, the tension in the string must be less than 10 N. Therefore, the tension in the string pulling block A in case a is less than the tension in the string pulling block A in case b. Therefore, block A's acceleration in case b is greater than block A's acceleration in case a.
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