Kinetic Energy and Friction in Rolling Motion

This content explores the kinetic energy of a rolling object, comprising both rotational kinetic energy (1/2 I omega^2) and translational kinetic energy (1/2 M v_com^2). It emphasizes energy conservation in rolling, the crucial role of static friction in maintaining "rolling without slipping" (a_com = R alpha), and analyzes the forces acting on a sphere rolling down an incline to derive its acceleration.