Q. 74.0( 4 Votes )

What is meant by uniform circular motion? Why do we need a force to keep a body moving uniformly along a circular path? Name this force.

Answer :

Uniform circular motion: When a body moves in a circular path with uniform speed (constant speed), its motion is called uniform circular motion.When a body moves in a circle, its direction changes continuously. Due to this change in direction we say that velocity changes and the motion is accelerated. From Newton’s 1st law we know that to create acceleration an external force is required. Hence we need a force to keep the body moving in a circular path.This force is called Centripetal Force.


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