The graph indicates the relationship between force and extension for a particular spring. What is the energy stored in the spring when the extension is $30\,\text{mm}$?
- A$0.095\,\text{J}$
- B$0.19\,\text{J}$
- C$0.25\,\text{J}$
- D$0.95\,\text{J}$
Physics 9702 · AS & A Level · Elastic and plastic behaviour