A 30-kg child starts at the center of a playground merry-go-round that has a radius of 3.5 m and rotational inertia of 500 kg⋅m^2 and walks out to the edge. The merry-go-round has a rotational speed of 0.20 s^−1 when she is at the center. What is its rotational speed when she gets to the edge?
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