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?
✓ Correct Answer
The correct answer is B: When each spring is given the same extension, the energy stored in Y is 8 times the energy stored in X.
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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