https://www.khanacademy.org/science/ap-physics-c-mechanics/x077f5683c1428fac:energy-and-momentum-of-rotating-systems 2026-06-30T04:10:47.863261627Z Energy and momentum of rotating systems Learn how energy and momentum concepts apply to rotational motion. Analyze and compare the motion of objects that roll without slipping using rotational kinetic energy. Discover how rotational kinetic energy and angular momentum are affected by external torques on a system, and the conditions under which these quantities remain constant. Apply conservation concepts to solve problems involving rotating systems. unit