An amusement park ride called the Rotor consists of a room in theshape of a vertical cylinder (1.98 m inradius) which, once the riders are inside, begins to rotate,forcing them to the wall. When the room reaches a speed of onerotation every 1.56 s, the floor suddenly drops out. What is the minimum coefficient of static frictionbetween riders and wall necessary to prevent them from sliding downthe wall?