Uniform circular motion
When an object follows a circular path at a constant speed , the motion is called uniform circular motion .
o
o
o
Velocity at any point is along the tangent at that point in the direction of motion .
Average velocity between two points is always perpendicular to Average displacement . Also , average acceleration is perpendicular to average displacement .
For an infinitely small time interval , Δtà 0 , the average acceleration becomes instantaneous acceleration which means that in uniform circular motion the acceleration of an object is always directed towards the center . This is called centripetal acceleration .