A 42 m diameter carousel merry-go-round is freely rotating, Ask an Expert

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A 4.2 m diameter carousel merry-go-round is freely rotating with an angular velocity of w=.85 rad/s. its moment of inertia is 1420 kg m^2. FOur people stand at the edge, must off the carousel, each with a mass of 65 kg. The four suddenly sltep onto the carousel all at once.

I) What is the new angular velocity of the carousel after th people are on it?

II) Now all but on jump off, in a radial direction away from th center. What is th new angular velocity?

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