A4: A man on the bicycle attempts to coast around the ellipsoidal loop without falling off the track (see Figure 4). The bicycle and man have a total mass of 85 kg and the centre of mass at G. Neglect the mass of the wheels. a) Draw the Free Body Diagram showing all parameters. b) Determine the radius of curvature and velocity at B. c) Determine the speed the cyclist must maintain at A just before entering the loop in order to perform the stunt. 1.2 m Figure 4 y B 3 m 4 m x