# A 4.5-m-diameter merry-go-round is rotating freely with an angular velocity of 0.84 rad/s . Its total...

###### Question:

A 4.5-m-diameter merry-go-round is rotating freely with an angular velocity of 0.84 rad/s . Its total moment of inertia is 1700 kg⋅m2 . Four people standing on the ground, each of mass 68 kg , suddenly step onto the edge of the merry-go-round.

What is the angular velocity of the merry-go-round now?

What if the people were on it initially and then jumped off in a radial direction (relative to the merry-go-round)?

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