Physics · Elasticity and Strength of Materials
A bar of length L, cross-sectional area A and weight W is fixed at the upper end and carries an axial pull of P at the lower end. The increase in the length of the bar is given by (where, E is the Young's modulus of material):
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1WL2AE + PL2AE
- 2WLAE + PLAE
- 3WL2AE + 2PLAE
- 4WL2AE + PLAE✓
Correct answer
WL2AE + PLAE
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