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If S is stress and Y is Young's modulus of material of a wire, the energy stored in the wire per unit volume is

Options

  1. A2 S^2 Y
  2. BS^2 / 2 Y
  3. C2 Y / S^2
  4. DS / 2 Y

Correct answer

B. S^2 / 2 Y

Step-by-step solution

U= 1 2 stress strain = S^2 2 Y

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