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Mechanical Properties of Solids: Elastic PE MCQ

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Elastic PEMediumQuestion 6367

Question

For a spring (k=200 N/m) stretched by 0.1 m. Elastic PE:
  1. A
    1 J
    Correct
  2. B
    20 J
  3. C
    0.1 J
  4. D
    2 J

Correct answer

1 J

Explanation

PE = ½kx² = ½×200×0.01 = 1 J.

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