AP Physics 1 Quiz
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ENERGY AND MOMENTUM OF ROTATING SYSTEMS
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A student stands on a frictionless turntable holding two 2.0 kg dumbbells at arm's length, rotating at angular speed $
omega_0$. External torque about the vertical axis is negligible. The student pulls the dumbbells close to the body, decreasing the system's rotational inertia to one-fourth its initial value.
Which statement best describes the final angular speed?
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