g What is the final angular velocity, ωf, of the two disks? Express ωf in terms of It, Ir, and ωi. View Available Hint(s) ωf = nothing Part B Because of friction, rotational kinetic energy is not conserved while the disks' surfaces slip over each other. What is the final rotational kinetic energy, Kf, of the two spinning disks? Express the final kinetic energy in terms of It, Ir, and the initial kinetic energy Ki of the two-disk system. No angular velocities should appear in your answer. View Available Hint(s) Kf = nothing Part C Assume that the turntable deccelerated during time Δt before reaching the final angular velocity ( Δt is the time interval between the moment when the top disk is dropped and the time that the disks begin to spin at the same angular velocity). What was the average torque, ⟨τ⟩, acting on the bottom disk due to friction with the record? Express the torque in terms of It, ωi, ωf, and Δt. View Available Hint(s) ⟨τ⟩ = nothing Provide Feedback