Koenig's theorem

Koenig’s theorem provides a way to find the total moment of inertia of a composite system made up of two or more parts. It states that the combined moment of inertia about a specific axis equals the sum of each part’s individual moment of inertia about that same axis, plus the product of each part’s mass and the square of the distance between its center of mass and the overall axis. Essentially, it breaks down complex calculations into manageable parts, simplifying the process of understanding how mass distribution affects rotational resistance in objects or systems.