Physics

# Difference Between Centripetal Force And Centrifugal Force with examples

Difference Between Centripetal Force And Centrifugal Force

 CENTRIPETAL FORCE CENTRIFUGAL FORCE Definition When a body moves in a circle with a uniform speed the force required to keep it moving in a circular path is called centripetal force. When a body moves in a circle, according to newton’s third law of motion a force equal and opposite to the centripetal force acts on it and tends to move it away from the Centre of its circular path. This force is called the centrifugal force. Direction It is directed towards the Centre of the circle. It is directed away from the Centre of circle Magnitude It can be calculated by Fc The magnitude of the centrifugal force can be calculated by calculating the centripetal force.

### CENTRIPETAL FORCE

Definition

The force which acts towards the Centre along the radius of a circular path on which the body is

moving with a uniform velocity Is called centripetal force.

EXPLANATION

• In a uniform circular motion, there must be a net force that must be applied to an object towards the Centre of a circle to make The object move around the circle, called centripetal force ‘w’. Without this force object dot: not move in a circular path.
• According to Newton’s Second Law of motion, this force that produces acceleration towards the Centre of the circle is called centripetal acceleration.

### CENTRIFUGE

It is an appliance used to separate heavier particles from the lighter particles in a liquid.

WORKING

The liquid is rotated in a cylindrical vessel at high speed with the help of an electric motor. The heavier particles move away from the axis of rotation and lighter particles move near to the axis of rotation.

EXAMPLES

1. WASHING MACHINE DRYER

In washing machine dryer the wet clothes are rotated at high speed. The water particles due to centrifugal force throw outward through the holes in the wall of outer vessel as the drum wet clothes rotate