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An axially loaded member of length L and area of cross-section A is subjected to a tensile load of P. If E denotes the Young's modulus of elasticity, the strain energy stored in the member is equal to :

A(P²L)/2AE

B(PL²)/2AE

C(P²L)/AE

D(PL)/AE

Answer:

A. (P²L)/2AE


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