[单选题]
A figure skater rotatingh bq/0m(aun ,jx7j jx, at 5.00 rad/s with /f c, kdr89u 3xq kt1swxe8ap*arms extended has a moment of inertia of8sxw 1r3*c9u te,ad/q8pkfxk $2.25 \; kgm^{2}$. If the arms are pulled in so the moment of inertia decreases to $1.80 \; kgm^{2}$, what is the final angular speed?
A. 2.25 rad/s
B. 4.60 rad/s
C. 6.25 rad/s
D. 0.81 rad/s
Post time 2024-1-22 02:51:16