Force:
A force is a push or pull which changes or tends to change the state of rest or uniform motion of the body.
Or
the product of mass and acceleration of a body is called force.
i.e. F = ma
Or
The rate of change of momentum is called force.
i.e. F = dp/dt
SI unit-
Since-
F = ma
= Kg×m/s^2
= Kgms^-2
The SI unit of force is kgms^-2 or Newton.
Unit force of one newton force:
unit force or one newton force is that force which produces an acceleration of 1m/s^2 in a mass of 1 kg.
Characteristics of force:
- A force is a vector quantity as it has both magnitude as well as direction.
- It can change the position of moving or a rest object.
- It is very useful in our daily life in both from applied and resistive.