Chapter 10, Problem 63AP

### College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

Chapter
Section

### College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

# Two concrete spans of a 250-m-long bridge are placed end to end so that no room is allowed for expansion (Fig. P10.63a). If the temperature increases by 20.0°C, what is the height y to which the spans rise when they buckle (Fig. P10.63b)?

To determine
The height y.

Explanation

Given info: The length of the bridge is 250 m. The increase in temperature ( Î”T ) is

20Î¿C . The co-efficient of linear expansion ( Î± ) of concrete is 12Ã—10âˆ’6/Î¿C .

Formula to calculate the final length is,

L=L0[1+Î±Î”T] (I)

• L0 is the original length which is equal to half the length of the bridge.

The original length is,

L0=250â€‰m2=125â€‰m

The schematic diagram is given below.

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