What is meant by centripetal force explain with example

Dear student,

A force which acts on a body moving in a circular path and is directed towards the centre around which the body is moving is known as centripetal force. Centripetal force is what pulls a rotating object towards the centre of what it's rotating around. For example, if you swing a ball on a rope around horizontally over your head, the centripetal force is your pulling on the rope so the ball doesn't fly away. Or in the case of the Moon rotating about the Earth, the centripetal force is the force of gravity constantly pulling the Moon toward the centre of the Earth, otherwise, the Moon would fly away in a straight line too. 
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