A pendulum swings repeatedly. Each later swing reaches a lower height than the previous one. The pendulum and its surroundings are treated as a closed system.
Explain the energy changes as the pendulum moves from its lowest point to one end of a swing. Explain why it reaches a lower height on later swings, and state what happens to the total energy of the closed system.
104 exam-style questions on AQA GCSE Physics 1.2 Conservation and dissipation of energy, covering 1.2.1 Energy transfers in a system and 1.2.2 Efficiency. Each one has a worked solution and a mark scheme showing where the marks go.