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NEET 2023 · Elastic Behaviour, Stress & Strain

Elastic Behaviour, Stress & Strain question from NEET 2023

Q10NEET 2023Easy

Elastic Behaviour, Stress & Strain

Let a wire be suspended from the ceiling (rigid support) and stretched by a weight $W$ attached at its free end. The longitudinal stress at any point of cross-sectional area $A$ of the wire is:

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Answer: (a)

Wire mass is neglected, so the tension is $W$ at every point of the wire.
Longitudinal stress $= \frac{\text{tension}}{\text{area}} = \frac{W}{A}$
So the answer is (a) $W/A$ .

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