Big Ben, the Parliament tower clock in London, has hour and minute hands with lengths of2.70mand4.50mand masses of60.0kgand100kg, respectively. Calculate the total angular momentum of these hands about the center point. (You may model the hands as long, thin rods rotating about one end. Assume the hour and minute hands are rotating at a constant rate of one revolution per 12 hours and 60 minutes, respectively.) magnitude \[ \mathrm{kg} \cdot \mathrm{m}^{2} / \mathrm{s} \] direction