It means size of the force

It is sum of all forces acting on a body.

**
If 2 forces act in same direction,
**

Magnitude of force increases

It is the sum of of both forces

**
If 2 forces act in different direction,
**

Magnitude of force decreases

It is the difference of both forces

**
Example 1 - If 2 forces act in same direction,
**

Suppose 2 persons are pushing car from back

Person 1 exerts force of X

Person 2 exert force of Y

Total Force exerted on car = X + Y

**
Example 2 -
**
**
If 2 forces act in different direction,
**

Magnitude of force decreases

It is the difference of both forces

Suppose 2 persons are pushing car one from back other from front

Person 1 exerts force of X

Person 2 exert force of Y

Total Force exerted on car = X - Y

Get live Maths 1-on-1 Classs - Class 6 to 12