(Answered) A steel rod of 20 cm in length with youngs modulus of 180

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A steel rod of 20 cm in length with Young's modulus of 180 Gpa is used for a tensile test. If the rod is elongated by 5 mm, (i) what is the magnitude of the stress built up in the specimen? and (ii) What would be the approximate value of modulus of rigidity of this sample?"

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