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Physics (AS & A Level) · May / June 2024 · Paper 13 · Question 20

9702Elastic and plastic behaviour

A sample of material is stretched by a tensile force to a point beyond its elastic limit. The tensile force is then reduced to zero. The force–extension graph is shown. Which area represents the net work done on the sample?

  1. AX
  2. BX + Y
  3. CY + Z
  4. DZ

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Correct answer: B. X + Y

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