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 - Questions: 19

Answer

Using concrete or stone for the support on the left would be a mistake.

Work Step by Step

In the situation on the left, the beam pulls upward on the support, placing it under tension. If it is made of ordinary concrete or stone, which are materials that are “very weak under tension”, the support might fail. The other support is compressed by the beam, so making it from concrete or stone would be OK.
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