Concurrent System of forces

Force

A push or pull exerted on an object

Coplanar parallel forces

All forces are parallel to each other and lie in a single plane.

Non-coplanar Non-Concurrent forces

All forces do not lie in the same plane, but their lines of action pass through a single point.

Coplanar Non-concurrent forces

All forces do not meet at a point, but lie in single plane

Non-coplanar Parallel forces

All the forces are parallel to each other but not in the same plane

Coplanar Concurrent forces

Line of action of all forces pass through a single point and forces lie in the same plane.

What is the principle of transmissibility?

The state of rest or of motion of a rigid body is unaltered if a force acting on the body is replaced by another force of the same magnitude and direction but acting anywhere on the body along the line of action of the applied forces.

Coplanar concurrent forces

all forces are parallel to each other lie in a single plane and are acting in the same direction

Non-Coplanar Concurrent forces

all the forces are parallel to each other, but not in the same plane . . . but their line of action pass through a single point

Collinear forces

line of action of all the forces acts along the same line

Characteristics of Forces

magnitude, direction, point of application, line of action