The passengers in a roller coaster car feel 1.60 times heavier than their true weight as the car goes through a dip with a 24.0 m radius of curvature. What is the car's speed at the bottom of the dip?

Question

Which equation do I use?
V= 2(pi)r/t = 2(pi)rtf = wr

Answer 1

.6 g = v^2 / r