The ratio of the torque due to gravity about the pivot and the resistance of mass to angular acceleration, the moment of inertia of the particle is found to be the product the mass of the particle with the square of its distance to the pivot.
The ratio of the torque due to gravity about the pivot of a pendulum to its angular acceleration is the resistance of the pendulum to movement. For a simple pendulum this is found to be the product the mass of the particle with the square of its distance to the pivot.