A tensile load of 100kN is gradually applied to a rectangular bar of d – McqOptions

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1.	A tensile load of 100kN is gradually applied to a rectangular bar of dimension 2cmx4cm and length of 5m. What will be the strain energy in the bar if E=1×105 N/mm2?
A.	312.5 N-m
B.	314500 N-mm
C.	245.5 N-m
D.	634 N-m
Answer» B.

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