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NEETPhysicsMechanical Properties of Solids

A steel rod of length 2l, cross sectional area A and mass M is set rotating in a horizontal plane about an axis passing through the centre. If Y is the Young’s modulus for steel, find the extension in the length of the rod.

Options

  1. A= 2 3YA ² l ²
  2. B2 = 2 3YA ² l ²
  3. C2 = 2 5YA ² l ²
  4. D= 2 5YA ² l ²

Correct answer

B. 2 = 2 3YA ² l ²

Step-by-step solution

Correct Option is : (B) 2 = 2 3YA ² l ²

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