Physics: Principles with Applications (7th Edition)

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

Chapter 9 - Static Equilibrium; Elasticity and Fracture - Misconceptual Questions: 3

Answer

Choice A.

Work Step by Step

The wall exerts both a horizontal and a vertical force on the hinged end of the rod. The vertical component of the tension is half of the weight of the beam. There is also a nonzero horizontal component of the tension, pulling toward the left. Using the Pythagorean Theorem on these two force components shows that the tension must be at least half of the beam’s weight.
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