In an amusement-park ride called the spinout, riders are positioned against the inside wall of a rotating drum. The drum begins to rotate and after a certain rotational speed is reached, the floor is lowered and the riders remain in position and do not fall. The diameter of the chamber is 4.3 m and the period of rotation is 1.7 s. What is the centripetal acceleration of the rider? 1 g is about 10 m/s2. Approximately how many g’s does the rider experience?