February/March 2026 Paper 12

2026 · 40 questions · 40 parts · 40 marks

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23Elasticity Hookes Law Young ModulusHard1 mark
An 8.00 N weight is attached to the lower end of a spring which is fixed at its upper end. The weight is initially held at rest at position X and the spring is unstretched. The weight is then released and falls to position Y, which is 4.00 cm below X. The weight oscillates and then eventually comes to rest at position O, which is 2.00 cm below X.
three diagrams of the same spring, fixed at its upper end, side by side: first with the spring unstretched and no weight attached; then with the 8.00 N weight attached at position Y, 4.00 cm below the unstretched end X, immediately after being released and falling; finally with the weight at rest at position O, 2.00 cm below X, after the oscillations have died away
How much energy is lost from the system?