# UCM 1

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Published on March 7, 2008

Author: zglazenburg

Source: slideshare.net

Uniform Circular Motion

What is UCM? It is when an object moves along a circular path at a constant speed.

It is when an object moves along a circular path at a constant speed.

Uniform= SAME Circular= ALONG A CIRCULAR PATH

Conditions Describing UCM Speed IS EQUAL to the Constant Velocity IS NOT EQUAL to the Constant This is because the direction is changing. = THE CONSTANT!

Acceleration does NOT equal zero Fnet does NOT equal zero

Acceleration does NOT equal zero

Fnet does NOT equal zero

During UCM the sum of all the forces acting on the object (Fnet does not equal zero) and the object is accelerating.

Incase of UCM the vectors for acceleration and force point towards the center .

Formulas Describing UCM

Centripetal Force Fc= Centripetal force m= mass ac= centripetal acceleration Centripetal force is any force (or combination of forces) that makes an object move in UCM

Speed Formula IS EQUAL TO Distance= Time= T

Radius of the circle (r) and time (t) it takes to complete a full circle are known. This time is called period of rotation (T). V= speed of UCM r= radius T= period of rotation

Centripetal Acceleration = centripetal acceleration v = speed r = radius

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