1. A physical pendulum in the form of a rod with length L = 2.10 m and mass m = 5.00 kg is attached to a frictionless pivot at one end as shown. The pendulum has non-constant density where the one end is three times denser than the other end and the density changes linearly from one end to the other. The pendulum is released twice from an initial angle of 0 = 28.7° with the vertical-one time with the denser end attached to the pivot and one time with the less dense end attached to the pivot. What is the difference between the maximum translational velocity of the center of mass of the pendulum achieved during these two releases? pivot ①