Rotary motion refers to the movement of an object around a central point or axis. This type of motion is common in many everyday objects, such as wheels, gears, and spinning tops. In rotary motion, all points on the object move in circular paths, and the speed of rotation is measured in terms of angular velocity. In physics, rotary motion can be described using concepts like torque and moment of inertia. Torque is the force that causes an object to rotate, while moment of inertia measures how difficult it is to change the object's rotational speed. Understanding rotary motion is essential in fields like engineering and mechanics.