Parallel Axis Theorem

The Parallel Axis Theorem is a principle used in physics and engineering to determine an object's rotational inertia, or how easily it can rotate. It states that if you know the rotational inertia of an object about its center of mass, you can find its inertia about any parallel axis by adding the mass of the object multiplied by the square of the distance between the two axes. This helps in analyzing the motion of objects when they rotate around different points, making it essential in designing structures, vehicles, and machinery where rotation plays a key role.