Three children are riding on the edge of a merry-go-round that is a solid disk with a mass of 90.3 kg and a radius of 1.63 m. The merry-go-round is initially spinning at 9.53 revolutions/minute. The children have masses of 31.0 kg, 32.1 kg and 36.1 kg. If the child who has a mass of 32.1 kg moves to the center of the merry-go-round, what is the new angular velocity in revolutions/minute?
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