8. An amusement park ride is made of a giant cylinder with its axis perpendicular to the ground like a giant soda can. Occupants go inside the cylinder as it begins to spin. At a high enough spin rate the occupants are stuck on the walls and don't slide down even if they lift their feet. Suppose = 0.40 and the cylinder's radius is 8.0m. What angular velocity is needed to allow occupants to stick to the walls while seemingly defying gravity?