Physics (AS & A Level) · May / June 2019 · Paper 13 · Question 20

A wire is attached at one end to a fixed point. A tensile force F is applied to the other end of the wire, causing it to extend. This is shown on the graph by the line OSP. The force F is then gradually reduced to zero and the wire contracts. This is shown on the graph by the line PQ. Which area on the graph represents the work done by the wire as it contracts?

1. AOSTO
2. BOSPRO
3. CQPRQ
4. DOSPQO

As printed in the paper