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A physics 70 kg professor stands at the center of
a frictionless turntable with arms outstretched
(the length of each arm is 1.2 m) and a 2 kg
dumbbell in each hand. He is set rotating about
the vertical axis at 2.5 rad/s. Calculate the
angular velocity if he pulls the dumbbells into his
stomach (assume that both dumbbells are over
the axis of rotation).
Moment of intertia was not given

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