Let a wire be suspended from the ceiling (rigid support) and stretched by a weight W attached at its free…

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:
  1. Zero
  2. 2WA 
  3. WA
  4. W2A

Solution

Longitudinal stress is given by,

stress=forcearea=WA

In case of ideal wire, stress at each point will be the same and will be equal to WA.

Asked in: NEET 2023 (All India)

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