The roller coaster in the figure below starts with a velocity of 17 m/s. One of the riders is a small girl of mass 31 kg. Find her apparent weight when the roller coaster is at locations B and C. At these two locations, the track is circular, with the radii of curvature given in the figure. The heights at points A, B, and C are
hA = 10 m,
hB = 20 m, and
hC = 0.
Assume friction is negligible and ignore the kinetic energy of the wheels.