Two spheres are rolling without slipping on a horizontal floor. They are made of different materials, but each has mass $5\mathrm{.}00$ kgkg and radius $0\mathrm{.}120$ mm$.$ For each the translational speed of the center of mass is $4\mathrm{.}00$ m$/$sm$/$s$.$ Sphere AA is a uniform solid sphere and sphere BB is a thin$-$walled, hollow sphere.