A 50 kg child takes a ride on a roller coast . the coaster maintains a constant speed of15 m/s as it moves around a loop of radius 10m.
(a) what is the centrupetal acceleration of the child.
(b) what force does the set exert on the child at the lowest point.
(c) what force does the seat exert on the child at the highest point of the loop.
(d) what force does the seat exert on the child child when the child is halfway between the top and bottom.