Vector

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).