A physical pendulum consists of a rigid body that is suspended from a fixed point and allowed to oscillate. Unlike a simple pendulum, which assumes a point mass, a physical pendulum accounts for the distribution of mass and its effect on the period of oscillation. For instance, an oscillating bar can be suspended from various points along its length, and its period can be compared with that of a simple pendulum of equivalent length. By changing the pivot point and measuring the resulting periods, students can explore how the moment of inertia and mass distribution influence the pendulum's motion. This setup is useful for determining the moment of inertia and for visualizing the principles of rotational dynamics in oscillatory motion.