Conservation Of Angular Momentum
A student sits on a rotating stool while holding a mass in each hand. With arms extended, the system has an initial angular velocity of 0.5 rad/s. The student then pulls the masses inward, reducing the total moment of inertia of the system to 1/4 of its initial value. What is the final angular velocity of the system?
A
4.0 rad/s
B
2.0 rad/s
C
0.125 rad/s
D
0.5 rad/s
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