Centripetal force and Centrifugal force.

Centripital force :

The force acting along the radius towards the centre of a circle to keep a body moving with uniform speed in a circular path is called centripetal force.
Or
The force which acts along the radius, towards the centre of a circular path and keep the body maving in circular path
called centriped force.

Centrifugal force :

The force which acts along the radius but away from the centre of the circular path and keeps the body moving in a circular path is called centrifugal force.

Application of Centrifugal force :

* Cream separator : It is a device used to separate the lighter contents of milk i.e., cream from milk. When milk is rotated in a cylinder at very large speed, the heavier particles move toward the wall of the cylinder where as the lighter particles i.e., cream collects near the axis of the cylinder from where it can be removed very easily.

* Drying machine : With the help of such machines the clothes can be dried very quickly. The clothes are placed in a large cylindrical vessel having a large number of fine holes along the side walls. When the wet clothes are rotated at a very high speed, the water particles fly tangentially toward the outer walls and as such escape through the holes and clothes get dried.