This lecture covers the exploitation of conservation of moment in rotation, gyroscopic effects, and the importance of cimetics. It discusses the effects of external forces, the concept of a spinning top, and the shape of a cone around the rotation axis. The lecture also delves into the precession of the earth, equinoxes, and the dynamics of a solid body in a general case. Examples of inertia tensors and the angular momentum with respect to different axes are explored.