A circular bird feeder 20 cm in radius has rotational inertia 0.12kg*m^2 . The feeder is suspended by a thin wire and is spinning slowly at 5.4 rpm . A 140-g bird lands on the rim of the feeder, coming in tangent to the rim at 1.1 m/s in a direction opposite the feeder's rotation.
What is the rotation rate after the bird lands?