n an amusement park ride, a person with mass 52 kg stands against the wall of a cylindrical room with radius 14.3 and coefficient of friction 0.594 between the rider and the wall. The ride begins to rotate. When the ride attains a constant speed of 7.4 m/s, the floor drops down ward. The rider remains pinned against the wall. What is the magnitude of the force that the rider feels pinning him against the wall