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Physics (AS & A Level) · Feb / March 2019 · Paper 12 · Question 20

9702Stress and strain

A spring has a spring constant of 6.0 N cm⁻¹. It is joined to another spring whose spring constant is 4.0 N cm⁻¹. A load of 80 N is suspended from this composite spring. What is the extension of this composite spring?

  1. A8.0 cm
  2. B16 cm
  3. C17 cm
  4. D33 cm

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Correct answer: D. 33 cm

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