A boy stands at the center of a merry-go-round platform that rotates at constant angular velocity. When the boy starts walking radially toward the edge, the platform's angular velocity
A) increases.
B) does not change.
C) decreases.
D) becomes zero.

Question

Quizplus · Accepted Answer

The platform's angular velocity decreases due to the conservation of angular momentum. As the boy moves radially outward, his moment of inertia with respect to the rotation axis increases, leading to a decrease in angular velocity to conserve angular momentum.

A Boy Stands at the Center of a Merry-Go-Round Platform