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A steel rod without constrain has a length of 200 mm and diameter of 20 mm...

A steel rod without constrain has a length of 200 mm and diameter of 20 mm at a temperature of 25oC. If the rod is heated uniformly to 125oC, what will be the length and diameter (accurate to 1/100 mm). What will be the stress at 125oC? The linear coefficient of thermal expansion of steel is 12.5x10-6 m/m/C.

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