1. The problem statement, all variables and given/known data An amusement ride consists of a car moving in a vertical circle on the end of a rigid boom. The radius of the circle is 10 m. The combined weight of the car and riders is 5.0 kN. At the top of the circle the car has a speed of 5.0 m/s which is not changing at that instant. What is the force of the boom on the car at the top of the circle? a.3.7 kN (Down) b.1.3 kN (Down) c.6.3 kN (Up) d.3.7 kN (Up) e.5.2 kN (Down) 2. Relevant equations Fc = mv^2/r Fg = mg = 5000N m = weight / g = 510kg 3. The attempt at a solution Since the car is at the top of the circle, I thought it would be Fc = Fb + Fg Fc = 510 * (5)^2 / 10 = 1275 N Fb = Fg - 1275 N = 3725 N So I thought the answer was 3725 N to the down way, but the answer says it is d which is 3.7kN to the up way. Can you tell me what I did wrong?