## Vector

### From DT Online

**Vectors** are Forces which are defined by both magnitude and direction.

**Vectors** can be represented by lines drawn to scale providing we know:

- the magnitude
- the point of application
- the line of action
- the direction

For example, from any point **O** as shown, a line can be draw to a scale representing an upward pointing force of **2 newtons** and similarly from the same point, a shorter line to represent the downward pointing force of **1 newton**.

Common sense tells us in such a simple example that these two opposing forces could be replaced by a single **1 newton**. force pointing upwards from point **O** *(i.e. the Resultant)* and the point

**O**could be held still by an equal and opposite, downwards pointing

**1 newton**force

*(i.e. the*.

**Equilibrant**)