A 0.21-m-long, 0.15 kilogram thin rigid rod has a 0.22 kilogram mass stuck on one of its ends and a 0.080 kilogram mass stuck on the other end. The rod rotates at1.7 rad/s through its physical center without friction. Find the magnitude of the angular momentum of the system taking the center of the rod as the origin? Treat the masses on the ends as point masses.