[填空题]
A figure skater can increase h uf6v z,6zs0jhaa9rx6er spin rotation rate 4 74xmiilv3gh from an initial rate of 1.0 rev every 2.0 s himv i4 4l7x3gto 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? $kg \cdot m^2$