It is an external push or pull which can change or tries to change the state of rest or of uniform motion. SI unit is newton (N) and CGS unit is dyne. 1 N = 105 dyne.
If sum of all the forces acting on a body is zero, then body is said to be in equilibrium.
Four fundamental forces in nature:
Centripetal Force
During circular motion, a force directed towards the center of the circular path acts on the body, known as centripetal force.
where, m = mass of the body.
Centrifugal Force
In circular motion, a force appears to act outwardly opposite to the centripetal force, called centrifugal force. This is an apparent or pseudo force.
Applications of Centripetal and Centrifugal Forces
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