[单选题]
An ice skater performs a pirouette (a fast spin) by pullw) 56mnsy)m 6hh )v.x1swqsx6ltedm8 ing in his outstretched7n; xe1qfee (3d6bbke arms close to his body. 6ex( b 1deqeb3f;ek7n What happens to his moment of inertia 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