A tensile force P Newton is applied gradually on a prismatic bar of length L m and areas of cross-section A m2. The strain energy stored in the bar will be equal to

A tensile force P Newton is applied gradually on a prismatic bar of le

1.	A tensile force P Newton is applied gradually on a prismatic bar of length L m and areas of cross-section A m2. The strain energy stored in the bar will be equal to
A.	(PL/AE)
B.	(PL2/AE)
C.	P2L/2AE)
D.	(P2L/AE)
Answer» D. (P2L/AE)

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A tensile force P Newton is applied gradually on a prismatic bar of length L m and areas of cross-section A m2. The strain energy stored in the bar will be equal to

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