A series of five 0.1-kg spheres are arrayed along a thin, lightweight rigid rod with length 0.5 m at intervals of 0.1 m from one end of the rod. The system spins about an axis perpendicular to and passing through the unoccupied end of the rod with a period of 0.3 s. In this way, each mass moves in the same plane along a circular path whose radius is its distance from the rotation axis.
(a) How far does each mass move during one revolution?
(b) What is the speed of each mass as it orbits the axis?
(c) What is the total angular momentum of the system?