A-LevelPhysicsDeformation of solidsMay/June 2013Paper 1 Q221 Mark
A rubber cord hangs from a rigid support. A weight attached to its lower end is gradually increased from zero, and then gradually reduced to zero. [Figure showing a rubber cord with a weight, and a force-extension graph with stretching and contraction curves] The force-extension curve for contraction is below the force-extension curve for stretching. What does the shaded area between the curves represent?
Athe amount of elastic energy stored in the rubber
Bthe amount of thermal energy dissipated in the rubber
Cthe work done on the rubber cord during stretching
Dthe work done by the rubber cord during contraction
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of deformation of solids within the Physicssyllabus. The examiner's mark scheme requires...
📋 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...
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