Physics (AS & A Level) · May / June 2026 · Paper 11 · Question 21

The graph shows the variation of the elastic potential energy $E_p$ stored in a spring with the square of the extension of the spring. What is the spring constant of the spring?

1. A0.0096 N m$^{-1}$
2. B6.0 N m$^{-1}$
3. C12 N m$^{-1}$
4. D24 N m$^{-1}$

As printed in the paper