College Physics
10th Edition
ISBN: 9781285737027
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Chapter 10, Problem 62AP
A 250-m-long bridge is improperly designed so that it cannot expand with temperature. It is made of concrete with α = 12 × 10−6 (°C)−1. (a) Assuming the maximum change in temperature at the site is expected to be 20°C, find the change in length the span would undergo if it were free to expand. (b) Show that the stress on an object with Young’s modulus Y when raised by ΔT with its ends Firmly fixed is given by a αY ΔT. (c) If the maximum stress the bridge can withstand without crumbling is 2.0 × 107 Pa, will it crumble because of this temperature increase? Young’s modulus for concrete is about 2.0 × 1010 Pa.
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Chapter 10 Solutions
College Physics
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