<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> In physics, circular motion is a movement of an object along the circumference of a circle or rotation along a circular path . It can be uniform, with constant angular rate of rotation and constant speed, or non-uniform with a changing rate of rotation . The rotation around a fixed axis of a three - dimensional body involves circular motion of its parts . The equations of motion describe the movement of the center of mass of a body . </P> <P> Examples of circular motion include: an artificial satellite orbiting the Earth at a constant height, a stone which is tied to a rope and is being swung in circles, a car turning through a curve in a race track, an electron moving perpendicular to a uniform magnetic field, and a gear turning inside a mechanism . </P>

When is an object said to be in uniform circular motion