Energy Conservation with Non-Conservative Forces

Energy Conservation with Non-Conservative Forces

### Formula

$$W_{nc}=\Delta K+\Delta U$$

### Expanded Form

$$W_{nc}=E_f-E_i$$

### Terminologies

- Wnc → Work done by non-conservative forces.

- Ei → Initial mechanical energy.

- Ef → Final mechanical energy.

### Conditions / Special Cases

For friction:

$$W_f=-fs$$

### Usage

- Used when friction or external forces are present.