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JAMB Physics 2013 Question 13

Question 13

Elasticity

Calculate the work done when a force of 20N stretches a spring by 50mm.

  1. A.0.5J.
  2. B.1.5J.
  3. C.2.0J.
  4. D.2.5J.
Show the answer and explanation

Answer: A (0.5J.)

Explanation

Work done in stretching = ½Fe = ½ × 20 × 0.05 = 0.5 J.