Seems to me that either of the following could settle that issue:
Necessary and sufficient:
-- The object is in motion AND there exists a point from which
the distance to the object is constant.
Sufficient but not necessary:
-- The component of the object's position that is parallel to some
straight line is proportional to the cosine of (time + a constant).
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An object is in circular motion when it travels in a circular path around a central point or axis, with a constant distance from the center. The object experiences a continuous change in direction but not in speed, resulting in a circular trajectory.
A circular motion diagram is important for understanding how an object moves in a circular path. It helps visualize the direction and magnitude of the object's velocity and acceleration at different points in the motion. This diagram is crucial for analyzing the forces acting on the object and predicting its behavior in circular motion.
Circular motion is often referred to as rotation when an object spins on its axis or revolution when an object moves around another object in a circular path.
Uniform circular motion: When an object moves in a perfect circle at a constant speed. Non-uniform circular motion: When an object moves along a circular path at varying speeds.
Uniform circular motion is when an object moves in a circular path at a constant speed. The object's velocity is constantly changing direction due to its circular motion, while its speed remains constant. This type of motion is an example of centripetal acceleration keeping the object moving in a circular path.
Static friction can affect an object's circular motion by providing the necessary force to keep the object moving in a circular path without slipping. This frictional force acts perpendicular to the object's motion, helping to maintain its circular trajectory.