A motorcycle has a constant speed of 24.0 m/s as it passes over the top of a hill whose radius of curvature is 129 m. The mass of the motorcycle and driver is 330 kg. Find the magnitude of

(a) the centripetal force and

(b) the normal force that acts on the cycle.

I found the Fc to be 1473.49... but i got confused trying to find the Fn

The normal force is mg-centripetalforce