Definition:
"Centripetal force is a force, which keeps a body moving in a circular path and that force acting towards the center of that circular path."
Explanation:
A body never automatically or itself moves in a circular path it, there is always a reason or some force that causes it to move in a circular path and that force in general is known as a centripetal force. and that force is always directed towards center. it means force is from the center of circular path that causes it to move in a circular path.
Example:
You tries to move a string in a circular path. one end of it is in your hand and other is tied with a stone. and consider that stone is a body. you provide force from your hand which is at the center of circular path in which stone(body) is moving.
Formula:
This equation shows that force depends on the mass of body and the velocity by which it is moving in path and the distance(r) between the center of circular path and body.
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