A Physics professor is experimenting with a solid cylinder attached to a rod that passes through the center of mass of the cylinder and is perpendicular to its flat surfaces. She holds the cylinder by the rod in the air and sets it with angular speed ω_i. Afterward, she lowers it onto the ground. Just when the cylinder's surface touches the ground, the speed of the center of mass of the cylinder is zero. Though in the beginning, the cylinder skids on the ground eventually it rolls without skidding. Given that the moment of inertia of the solid cylinder about the rod is I = 1/2 mR², and the coefficient of friction between the cylinder and the ground is μ, determine for how long the cylinder skids on the ground before it rolls without skidding.

[Hint: Apply ∑F = ma, ∑τ_cm = I_cmα_cm, and consider that v_cm = ωr only when the cylinder rolls without skidding.]