You have to design a loop-the-loop for a new amusement park so that when each car passes the top of the loop inverted (upside-do
wn), each seat exerts a force against a passenger's bottom that has a magnitude equal to 1.5 times the gravitational force that Earth exerts on the passenger. Write the equation for the speed of car on the top of the loop-the-loop for a loop of radius R. Assume the mass of car is m.
