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A steel bar of rectangular section 50 mm x 30 mm and length 1.5 m is subjected to a gradually applied load of 150

A steel bar of rectangular section 50 mm x 30 mm and length 1.5 m is subjected to a gradually applied load of 150 kN. Find the strain energy stored in the bar. If the elastic limit of the material of the bar is 150 N/mm?, proceed to determine the proof resilience and modulus of resilience.

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