Two thin rods of length l are rotating with the same angular speed ω (in rad/s) about axes that pass perpendicularly through one end. rod a is massless but has a particle of mass 0.80 kg attached to its free end. rod b has a mass of 0.80 kg, which is distributed uniformly along its length. the length of each rod is 0.85 m, and the angular speed is 5.4 rad/s. find the kinetic energies of rod a with its attached particle and of rod b.