We are to design the track for an induction roller coaster. To create an inital thrill, we want each passenger to leave the loading point with acceleration g along the horzontal track. To increase the thrill, we also want that first section of track to form a circular arc, so that the passenger also experiences a centripetal accleration. When the magnitutde a of the net acceleartion reaches 4g at some point P and angle theta P along the arc, we want the passenger then to move in a straight line, along a tangent to the arc. a)What anle theta P should the arc subtend so that a is 4g at point P b)What is the magnitude a of the passengers net accleration at the point P and after point P. I'm really stuck on this one. I have tried to relate this to a pendulum but without an R I don't know how to begin.