Rotational motion is the movement of an object around an axis or a fixed point. This type of motion is characterized by the object's orientation or angular position changing over time.
Rotational motion is caused by a force acting on an object that is not directly in line with the object's center of mass. This creates a torque, or a rotational force, that causes the object to rotate around the axis.
Translational motion is the movement of an object in a straight line, while rotational motion is the movement of an object around an axis. In translational motion, all parts of the object move the same distance and at the same speed, while in rotational motion, different parts of the object may move at different speeds and distances.
Rotational motion can be measured using angular velocity, which is the rate of change of angular displacement over time, and angular acceleration, which is the rate of change of angular velocity over time. These are typically measured in radians per second and radians per second squared, respectively.
Some examples of rotational motion in everyday life include the rotation of the Earth on its axis, the spinning of a top, the movement of a Ferris wheel, and the rotation of a bicycle wheel. In sports, the spinning of a ball, such as a basketball or a soccer ball, is also an example of rotational motion.