Peyton (Body Mass = 74.2 kg) likes to ride the TRAX train standing up and without holding on to the pole. The train goes around one particular curve with a radius of 18.9 m at a velocity of 10.4 m/s. Peyton's center of mass is 0.81 m above the floor. How wide should their base of support be to insure stability? Peyton (Body mass = 86.4 kg) is riding a snowboard at 9.9 m/s around a curve with a radius of 11.8 m on a flat stretch of snow. What is the magnitude of the resultant force (including vertical and horizontal forces)?