- Definition 1: Work
- is defined as the product of the magnitude of a force applied and the magnitude of the displacement in the direction of the force.

w = work in Joules (J)

F = force in Newtons (N)

s = displacement in metres (m)

### Note:

- Definition 2: Joule
- One joule of work is done when a force of one Newton acts through a displacement of one metre in the direction of the force. 1J = 1N.m

### Example 1: **Work Done if the Force and Displacement are in the Same Direction. **

### Example 2: **Work Done if the Force and Displacement are not in the Same Direction. **

F_{x} is the force in the direction of the displacement.

### Example 3

F_{x} is the force in the direction of the displacement.

Work Done if the Force and the Displacement are Perpendicular.

### Example 4

If the force is perpendicular to the direction of the displacement there is a zero component of the force in the direction of the displacement.

(Thus no work is done!)