Dynamics around an Axis: Moments and Inertia

This lecture covers the calculation of moments of forces around an axis, the concept of inertia, and the determination of principal axes of inertia. It explains how to calculate the moment of external forces relative to a point on the axis, the definition of moment of inertia around an axis, and the addition of inertia moments of rotating masses. The lecture also discusses the determination of principal axes of inertia for symmetric bodies and the use of orthogonal frames to simplify calculations. Additionally, it explores the concept of principal moments of inertia and how to find them using symmetry properties.