Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 5 - Think and Discuss: 80

Answer

The tension would be the same if only one horse pulled and the left rope were tied to a tree. If both horses pulled in the same direction, the tension in the rope (and in the poor man's aching arms) would be twice what it was in the other 2 situations.

Work Step by Step

Tension is discussed on page 30.
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