[填空题]
A figure skater can increase k-.3ex nx/hsy 33 sp t3y0bhhlher spinw. ,vnlxwbx(.8uzes- rotation rate from an initial rate of 1.0 rev every 2.0w bn.e.lz(wx- s8,xuv s to a final rate of 3 $rev/s$ If her initial moment of inertia was 4.6 kg*$m^2$ what is her final moment of inertia? How does she physically accomplish this change? $kg \cdot m^2$