Linked from
The 13 pages that link to Conservation of angular momentum, each with the reason it gives.
Celestial mechanicsRelated: It explains orbital speed changes and the stability of orbital planes.
Two-body problemRelated: Central gravity exerts no torque, confining motion to a plane.
CycloneRelated: Inward-moving air can spin faster as its distance from the center decreases.
Nebular hypothesisRelated: It links the cloud's slow initial rotation to the rapidly rotating disk.
Kepler's first lawRelated: It confines two-body motion to a plane and helps determine orbital shape.