engineering recuitment BTSC Bihar JE Civil Mock Test Strength of Materials Strain Energy

The strain energy (U) of the prismatical bar for deflection δ, cross section area A, young’s modulus E and length of bar l:

1
\(\rm \frac{PL}{AE}\)
2
\(\rm \frac{PL^2}{AE}\)
3
\(\rm \frac{P^2L}{2AE}\)
4
\(\rm \frac{P^2L}{AE}\)
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