Question: A 4 . 2 m diameter merry - go - round is rotating freely with an angular speed of 0 . 7 0 rad /

A 4.2 m diameter merry-go-round is rotating freely with an angular speed of 0.70 rad/s. Its total moment of inertia is 2200 kgm2. Four people standing on the ground, each of 70 kg mass, suddenly step onto the edge of the merry-go-round.

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