Angular momentum is a physics term that describes a rotational motion about an axis of rotation.
The quantity of angular momentum in the system will not change, regardless of any changes occurring on, or to, the object generating that angular momentum. In rotational systems, angular momentum is most commonly quantified by measuring its magnitude with units such as kilogram meter squared-second (kgm2s) or pound-foot second (lbf3s). The unit for radius rs can be meters or millimeters depending on what goes inside rss
Angular Momentum = I х θ х rs π