[填空题]
A figure skater can increase her spin rotawl v/y,l1,k.h5sqfbvcov ;0x;bo 4s it c 4+zuhfq0 w.4m*qloiion rate from an initial rate of 1.0 rev every q+ohqicfl z4 u .40mw*2.0 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? $kg \cdot m^2$