The wheels of a wagon can be approximated as the combination ofa thin outer hoop, of radius rh = 0.209 m and mass 4.51 kg, and twothin crossed rods of mass 7.80 kg each. You would like to replacethe wheels with uniform disks that are 0.0588 m thick, made out ofa material with a density of 5990 kilograms per cubic meter. If thenew wheel is to have the same moment of inertia about its center asthe old wheel about its center, what should the radius of the diskbe?
