In mechanics, there are two main types of rotational motion: uniform rotational motion and non-uniform rotational motion. These types describe the behavior of objects rotating around an axis.
Uniform Rotational Motion: Uniform rotational motion occurs when an object rotates at a constant angular velocity. In this type of motion, the object covers equal angular displacements in equal intervals of time. Each point on the rotating object moves along a circular path with the same angular speed. Examples of uniform rotational motion include the constant rotation of a wheel or a disk.
Non-uniform Rotational Motion: Non-uniform rotational motion occurs when an object rotates with a varying angular velocity. In this type of motion, the angular displacement covered by the object is not equal in equal intervals of time. The angular speed of different points on the rotating object may differ. Examples of non-uniform rotational motion include the spinning of a top or the motion of a propeller.
It's important to note that rotational motion often occurs in conjunction with translational motion, where an object moves in a straight line. This combination of rotational and translational motion is known as general motion. Many real-world objects exhibit general motion, such as a rolling ball or a spinning top moving across a surface.