A physics professor stands at the center of a frictionless turntable witharms outstretched and a 5.0 kg dumbbell in each hand . Heis set rotating about the vertical axis, making one revolution in 2.0 s.Find his final angular velocity if he pulls the dumbbells inward to hisstomach. His moment of inertia (without the dumbbells) is 3.0 kg .m2with arms outstretched and 2.2 kg # m2 with his hands at his stomach.The dumbbells are 1.0 m from the axis initially and 0.20 m at the end.

A physics professor stands at the center of a frictionless turntable witharms outstretched and a 5.0 kg dumbbell in each hand . Heis set rotating about the vertical axis, making one revolution in 2.0 s.Find his final angular velocity if he pulls the dumbbells inward to hisstomach. His moment of inertia (without the dumbbells) is 3.0 kg .m2with arms outstretched and 2.2 kg # m2 with his hands at his stomach.The dumbbells are 1.0 m from the axis initially and 0.20 m at the end.