Work Done by Spring Force

Work Done by Spring Force

### Formula

$$W=-\frac{1}{2}kx^2$$

### Work done by external force:

$$W=\frac{1}{2}kx^2$$

### Terminologies

- k → Spring constant.

- x → Extension or compression of spring.

### Conditions / Special Cases

- Spring force is a restoring force.

- Work done by spring is negative during stretching.

### Usage

- Used in spring-block systems.