A-LevelPhysicsDeformation of solids9702/12 · May/June 2025 · Q221 Mark
Two springs X and Y stretch elastically. The graphs show the variation with extension x of the force F applied to each spring. [Diagram shows two Force-extension graphs. Spring X: F/N (0-20) vs x/cm (0-10), linear from origin to (10, 20). Spring Y: F/N (0-80) vs x/cm (0-5), linear from origin to (5, 80).] Which statement is correct?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
AWhen each spring is given the same extension, the energy stored in Y is 4 times the energy stored in X.
BWhen each spring is given the same extension, the energy stored in Y is 8 times the energy stored in X.
CWhen the same force is applied to each spring, the energy stored in Y is 4 times the energy stored in X.
DWhen the same force is applied to each spring, the energy stored in Y is 8 times the energy stored in X.
✓ Correct answer
B: When each spring is given the same extension, the energy stored in Y is 8 times the energy stored in X.
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