A metallic girder (support) is 50 ft long and has an initial temperature of 30 Fahrenheit , then it was heated to 75 Fahrenheit; how much force (lb) is involved with the elongation of the girder if its cross sectional area is 4.0 ft^2 Y metal girder = 3.0 x10^7 lb/in^2 Coefficient of expansion of metal girder= 1.0 x 10^-5/ Fahrenheit

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Chapter10: Thermal Physics
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4. A metallic girder (support) is 50 ft long and has an initial temperature of 30 Fahrenheit , then it was heated to 75 Fahrenheit; how much force (lb) is involved with the elongation of the girder if its cross sectional area is 4.0 ft^2 Y metal girder = 3.0 x10^7 lb/in^2 Coefficient of expansion of metal girder= 1.0 x 10^-5/ Fahrenheit
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