1. The problem statement, all variables and given/known data What is the normal force acting upon a person at the top of a ferris wheel that has a radius of 60 meters, and is travelling at a rate of 25 meters/second? 2. Relevant equations Centripital acceleration = velocity²/radius Centripetal Force = Gravity Force - Normal Force Normal Force = mv²/rtmg Gravity Force = mg 3. The attempt at a solution The only way I know of to solve this problem is if the mass is known, but in this question the mass is not given. Centripital acceleration = 10.42 m/s² I tried drawing a free body force diagram What is the next thing I should be considering?