A player pulls back the plunger of a pinball machine. This compresses a spring inside the machine. The player then holds the plunger still. The spring is not inelastically deformed.
Which statement about the compressed spring is correct?
No energy is stored in it because the plunger and the spring are not moving.
Energy will be transferred to its elastic potential store only when the plunger is released.
Energy is stored in its kinetic store because the spring was moved as it was compressed.
Energy is stored in its elastic potential store because work was done to compress it.
106 exam-style questions on AQA GCSE Physics 5.3 Forces and elasticity, covering 5.3 Forces and elasticity. Each one has a worked solution and a mark scheme showing where the marks go.