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A Steel rectangular bar is subjocted to a thermal stress leading to a temperature difference of 20C. Ito modulus of elnsticity is 2x tolt Pa,

A Steel rectangular bar is subjocted to a thermal stress leading to a temperature difference of 20C. Ito modulus of elnsticity is 2x tolt Pa, Estmate the stress in Pa and strain if the cootficient of thermal expansion of steel a is 7.2106C1 [4M]

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