A student sits motionless on a stool that can turn friction-free about its vertical axis (total rotational inertia I). The student is handed a spinning bicycle wheel, with rotational inertia I1, that is spinning about a vertical axis with a counterclockwise rotational velocity ω0. The student then turns the bicycle wheel over (that is, through 180∘). Determine the final rotational velocity acquired by the student. Express your answer in terms of the variables