Angular Momentum momentum of rotating systems important in: 1. planet-moon systems (origin of our moon) 2. formation of solar system depends on 1. mass of rotating system ( more mass => more angular momentum 2. distribution of mass in system (more distant from center => more angular momentum) 3. speed of rotation (faster => more angular momentum) Angular momentum is conserved . => total amount of angular momentum in a system does not change. Picture this as a box of angular momentum divided into three parts. The amount of each part can change but the total size of the box never changes. This means that if on part changes, the other MUST also change in order to keep the total amount constant.
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