30)
30) A particularly scary roller coaster contains a loop-the-loop in which the car and rider are
completely upside down. If the radius of the loop is 13.2 m, with what minimum speed must the
car traverse the loop so that the rider does not fall out while upside down at the top? Assume the
rider is not strapped to the car.
A) 14.9 m/s
B) 12.5 m/s
10.1 m/s
D) 11.4 m/s