A pendulum is set swinging in a room. Each swing is smaller than the previous swing until the pendulum stops. What happens to most of the energy transferred away from the pendulum's kinetic and gravitational potential stores as the swings become smaller?
it increases the thermal store of the pendulum but not of the surroundings
it increases the thermal stores of the pendulum and the surroundings
it remains in the gravitational potential store of the stationary pendulum
it remains in the kinetic store of the air within the room
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.