A wire is pulled by applying successively larger forces $F$. For every force value used, the extension $x$ is measured. Using the collected data, a force-extension graph is drawn. Which statement concerning the area beneath the graph must be true?
- AIt can be calculated as $\frac{1}{2}Fx$.
- BIt is the elastic potential energy stored in the stretched sample.
- CIt is the work done in stretching the sample.
- DIt would be the same for any wire of the same material.