TYPES OF FORCES

The force system may be classified as follows :

5.1 Coplanar

When the system of forces are in a plane, it is called coplanar system of forces 

1.5.1.1 Collinear 

When the system of forces are having common lines of action, it is called collinear system of forces.

1.5.1.2 Concurrent

When the forces intersect at a common point, they are called concurrent forces.

1.5.1.3 Parallel

When the forces are parallel, they are called parallel forces.