A child with a mass of 21 kg is sitting in the center of a merry-go-round with a radius of 2.01 m. If the merry-go-round has a rotational inertia of 595 kg m2, and is initially spinning at a rate of 0.798 rad/s, what is the speed of rotation after the child moves from the center to the rim of the merry-go-round (in rad/s)?