Conservation of Angular Momentum
A student on a rotating stool holds two 2.0 kg masses, each initially 0.8 m from the axis of rotation. The system has an initial angular velocity of 0.5 rad/s. The student then pulls the masses inward to a distance of 0.2 m from the axis. What is the final angular velocity of the system?
A
0.125 rad/s
B
8.0 rad/s
C
2.0 rad/s
D
4.0 rad/s
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