Question: A 5.2 m diameter merry-go-round is rotating freely with an angular velocity of 0.60 rad/sec. Its total moment of inertia is 1900 kg.m 2 .

A 5.2 m diameter merry-go-round is rotating freely with an angular velocity of 0.60 rad/sec. Its total moment of inertia is 1900 kg.m². Four people standing on the ground, each of 60 kg mass, suddenly step onto the edge of the merry-go-round.

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

(b) Assume that the people were on it initially (when the angular velocity is 0.60 rad/sec) and then jumped off in a radial direction (relative to the merry-go-round). What would be the angular velocity of the merry-go-round?

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