A motorcycle is traveling up one side of the hill and down the other side. The crest of the hill is a circular park with the radius of 45.0 m.
(a) determines the maximum speed that the cycle can have while moving over the crest without losing contact with the road.
(b) if the motorcycle travels over the crest at half the speed found in part (a), find the ratio between the apparent weight of the motorcycle and its rider and their true weight.