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What is the extension in the length of a steel wire of length 10 m and radius 0.1 cm, with a mass of 25 kg hanging from its free end? (Assume lateral strains –3 with Young’s modulus Y=2×10 11 Nm –2 .)

Options

  1. A2×10 -3 m
  2. B3×10 -3 m
  3. C4×10 -3 m
  4. D5×10 -3 m

Correct answer

C. 4×10 -3 m

Step-by-step solution

Correct Option is : (C) 4×10 -3 m

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