A semicircular section of roller coaster track (Radius=34m) is designed to be able to provide up to 140kN (1.4x10^5N) of support (upward normal force) for coasters without collapsing. (a) Draw a FBD for a coaster at the bottom of this semicircular track. Assume friction and air resistance are negligble, and that the car is traveling at a constant speed. (b) If an overloaded coaster with total mass of 4700 kg reaches the bottom of this curved section of track at a constant speed of 28 m/s, will the track collapse?