Uniform circular motion is a type of motion in which an object moves in a circular path at a constant speed. This means that the object's speed remains the same, but its direction is constantly changing.
In uniform circular motion, the speed of the object remains constant, while in non-uniform circular motion, the speed may vary. Additionally, the acceleration in uniform circular motion is directed towards the center of the circle, while in non-uniform circular motion, the acceleration may have both a tangential and radial component.
In uniform circular motion, the radius of the circle and the speed of the object are directly proportional. This means that as the radius increases, the speed also increases, and vice versa.
No, an object cannot undergo uniform circular motion without an external force. In order for an object to move in a circular path at a constant speed, a force must be acting on it towards the center of the circle, known as centripetal force.
Some examples of uniform circular motion include the Earth orbiting around the Sun, a car driving around a curved track at a constant speed, and a satellite in geostationary orbit around the Earth.