what is force?and types of force?
Answers
Newton's second law states that Change in momentum is directly proportion to force applied on body.
there are two types of forces -
Contact forces and non contact forces.
◆contact forces are those forces which applied when they are in contact of body eg. frictional force,Normal force.
◆Non contact force-These forces doesn't require any contact with body.
eg-Electrostatic force, gravitational force.etc.
Force is that cause which either changes or tends to change the shape, size, dimensions, state of rest, state of motion etc. of an object over which it acts.The SI unit of force is newton, denoted by N . The forces are mainly divided on the basis of when it acts. The types of forces are given below : -
1. Contact Forces
The forces that are applicable only when the objects under consideration are in actual physical contact with each other are called contact forces. Examples: Frictional Force, Muscular Force, Force of Tension, etc.
2. Non-contact Forces
The forces that are applicable even if the objects under consideration are not in actual physical contact are named non-contact forces. Examples: Gravitational Force, Electrostatic Force, Magnetic Force, etc.
