A system of Forces

• System of Forces:-  When several forces act simultaneously on a body they constitute a system of forces.

 Classification of System of Forces

• Coplanar Force System:- If all the forces in a system lie in a single plane, it is called a coplanar force system.

Coplanar Force System:- 

1. Coplanar Collinear Force System
2. Coplanar Concurrent Force System
3. Coplanar Parallel Force System
4. Coplanar Like Parallel Force System
5. Coplanar Unlike Parallel Force Syste
6. Coplanar Non-Concurrent Non-Parallel Force System

1. Coplanar Collinear Force System:- If the line of action of all the forces lies along, a single line and forces lie in the same plane then it is called a coplanar collinear system of forces. 

           Watch Video Lecture on this link https://www.youtube.com/watch?v=b8mCYMc53xs&t=327s

• Coplanar Concurrent Force System:-   If the line of action of all the forces in a system passes through a single point and forces lie in the same plane, it is called a coplanar concurrent force system. 

Example:- Forces on a rod resting against a wall.

• Coplanar Parallel Force System:- In a system of forces all the forces are parallel to each other and forces lie in the same plane, it is called a coplanar parallel force system.

They are further classified as

1. Coplanar like parallel
2. Coplanar Unlike Parallel