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NEET2023PhysicsMechanical Properties of SolidsActual

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:

Options

  1. AZero
  2. B2 W A  
  3. CW A
  4. DW 2 A

Correct answer

C. W A

Step-by-step solution

Longitudinal stress is given by, s t r e s s = f o r c e a r e a = W A In case of ideal wire, stress at each point will be the same and will be equal to W A .

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