Elastic Potential Energy
### Formula
$$U=\frac{1}{2}kx^2$$
### Terminologies
- U β Elastic potential energy.
- k β Spring constant.
- x β Extension or compression.
### Dimensions
$$[U]=[ML^2T^{-2}]$$
### Conditions / Special Cases
- Energy stored is always positive.
$$U\geq0$$
### Usage
- Used in spring-mass systems.