A passenger with mass 85 {\rm kg} rides in a Ferris wheel. The seats travel in a circle of radius 35 {\rm m}. The Ferris wheel rotates at constant speed and makes one complete revolution every 25 {\rm s}.
Part A Calculate the magnitude of the net force exerted on the passenger by the seat when she is one-quarter revolution past her lowest point.
Part B Calculate the direction of the net force exerted on the passenger by the seat when she is one-quarter revolution past her lowest point.
Part C Calculate the magnitude of the net force exerted on the passenger by the seat when she is one-quarter revolution past her highest point.