A Man Stands on the Center of a Platform That

Multiple Choice

A man stands on the center of a platform that is rotating on frictionless bearings at a speed of 1.00 rad/s.Originally his arms are outstretched and he holds a 4.54-kg mass in each hand.He then pulls the weights in toward his body.Assume the moment of inertia of the man,including his arms,to remain constant at 5.42 kg · m².If the original distance of the weights from the axis is 0.914 m and their final distance is 0.305 m,the final angular velocity is

A) 1.14 rad/s
B) 1.27 rad/s
C) 1.58 rad/s
D) 2.08 rad/s
E) 7.70 rad/s