Two ice-skaters having masses 50 kg and 80 kg, hold hands and rotate about a vertical axis which passes between them, making one revolution in 1.5 s. Their centers of mass are separated by 1.7 m, and their center of mass is motionless. Model each and every skater as a point particle.
(i) Determine the angular momentum of the system regarding its center of mass.
(ii) Determine the net kinetic energy of the system.