[单选题]
An ice skater performs a pieij5lwn8zafln/ 5h-y f9d/2 i rouet1*-ts b;jfa mdw;fy+g6b rj u5te (a fast spin) by pulling in his outstretched arms ;d61j* gmwffbrujbys+5 -; atclose to his body. 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