The graph illustrates how a spring’s extension changes with the force applied to stretch it. What is the strain energy stored in the spring when the extension is $4.0\,\text{cm}$?
- A$60\,\text{J}$
- B$120\,\text{J}$
- C$600\,\text{J}$
- D$1200\,\text{J}$
Physics 9702 · AS & A Level · Elastic and plastic behaviour