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# UCM 1

## on Mar 07, 2008

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## UCM 1Presentation Transcript

• Uniform Circular Motion
• What is UCM?
• 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
• 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