[单选题]
An ice skater performs a pirouette (a fast sj/m3g0 onzb,hug+u (dpin) by t *ke: .qlp60a /prdxry p*t,hpulling in his outstretched arms close to his body. What happens tor.t h*6ya/dplq ,xke0ppt:* r his rotational kinetic energy about the axis of rotation?
A. It does not change.
B. It increases.
C. It decreases.
D. It changes, but it is impossible to tell which way.
Post time 2024-1-22 02:51:16