two thin rods of length l are rotating with the same angular speed (in rad/s) about axes that pass perpendicularly through one end. rod a is massless but has a particle of mass 0.66 kg attached to its free end. rod b has a mass of 0.66 kg, which is distributed uniformly along its length. the length of each rod is 0.75 m, and the angular speed is 4.2 rad/s. find the kinetic energies of rod a with its attached particle and of rod b.
