Question: A steel bar has a rectangular section 3 0 x 5 0 mm and is 6 0 0 mm in length. Determine the strain energy

A steel bar has a rectangular section 30 x 50 mm and is 600 mm in length. Determine the strain energy stored in the bar when it is subjected to an axial load of 200 kN.If the bar reaches its elastic limit when the axial load is 465 kN, what is the proof resilience of the steel?E for steel is 210 GPa.

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