What are the types of forces?
We can classify forces into two types:
Contact force
Contact force is the force that results from an interaction of two bodies that are in physical contact with each other.
Following are the types of contact forces:
- Applied force
- Normal force
- Frictional force
- Air resistance
Types of contact force
Non-contact forces
Non-Contact force is a force acting between bodies that are not in physical contact with each other.
Following are the types of non-contact forces:
- Electrical force
- Magnetic force
- Gravitational force
Types of non-contact force
What are the effects of force?
A force can:
- Set a stationary object in motion – A ball when kicked starts
- Stop a moving object – A moving ball comes to a halt after sometime due to force of friction.
- Change the velocity of an object – A slow moving ball, when kicked with force, will start moving
- Change the direction of a moving object – When a ball is kicked by one player to another, the second player can change its direction by again kicking
- Change the shape, size or structure of an object – When a ball is squeezed with force, it changes shape and sometimes too much force can burst it as well, changing its structure.