[填空题]
A figure skater can /ky zb+q ;.zlxsv z22gincrease av;3u*v )+zu(nqfnn c her spin rotation rate from an initial rate of 1.0 rev every 2.0 s to a final rate of 3 n*qu)vzann3 +fc(uv;$rev/s$ 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? $kg \cdot m^2$