APFIVE Conservation of Angular Momentum
A student sits on a rotating stool holding two 2.0 kg masses extended at arm’s length. Initially rotating at 0.5 rad/s with the masses 0.8 m from the axis, the student pulls the masses inward to 0.2 m from the axis. What is the student’s final angular velocity?
A
0.125 rad/s
B
8.0 rad/s
C
4.0 rad/s
D
2.0 rad/s
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