Kđ@i¨Q (Oú)j
T@QúiŘj@
(1) I=ml2/12=2~12/12ŕ0.17(kgm2)
(2) I=ml2/3=2~12/3ŕ0.67(kgm2)
(3) I=mr2/2=2~0.012/2=1.0~10-4(kgm2)