A roller coaster car and its occupants are pulled up an initial incline by a chain to point A, and from then on it rolls without friction on the tracks. It descends the first hill and then enters the inside of a loop at point B. An FSU student has, celeverly, brought along a bathroom scale to test out some theories from her Physics class. The scale normally reads 65 kg when she stands on it. She sits on it in the coaster so that her entire weight rests on the scale when the car is level. You can assume that the initial incline is high enough that the car stays on the tracks at point C.