An 85-kg man stands 0.70 m from the center of a large rotatingturntable with a f

An 85-kg man stands 0.70 m from the center of a large rotatingturntable with a frictionless axis. Initially the turntable isrotating at 8.0 rpm (rev/min). After the man (carefully!) walks tothe edge of the turntable (radius = 1.6 m) the turntables speedis just 5.0 rpm. What is the turntables moment of inertia?