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1. Steel has α=12.1E-6 1/°C and Y=201E9 Pa. A steel rod has a length of 3.45...

1. Steel has α=12.1E-6 1/°C and Y=201E9 Pa. A steel rod has a length of 3.45 m and a radius of 1.11 cm. What change in temperature is needed to create a force of 669 N?

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Answer #1

Find the elongation required to create the given force using Young’s modulus of steel and then use coefficient of linear expansion to find the required change in temperature as shown below

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