Answer:
147
Step-by-step explanation:
(A) At the top of the Ferris wheel, the normal force (also known as the centripetal force) is:
F_norm = (55 kg) × (7.5 m) × (1/38 s)² = 147 N
(B) At the bottom of the Ferris wheel, the normal force is:
F_norm = (55 kg) × (7.5 m) × (1/38 s)² = 147 N
Note that the normal force is the same at both the top and bottom of the Ferris wheel, as the force required to keep you in a circular path is constant.