physical pendulum

A physical pendulum is a rigid body mounted on a horizontal axis, allowing it to swing freely about its equilibrium position when displaced. Unlike a simple pendulum, which idealizes a bob on a massless string, a physical pendulum accounts for the entire mass distribution of the swinging object.12

The period of oscillation for a physical pendulum, like a simple pendulum, is influenced by gravity and the length of the suspension. However, its period also depends on how its mass is distributed, which is quantified by its moment of inertia. The moment of inertia measures an object's resistance to changes in its rotational speed.324