A stunt pilot in an air show performs a loop-the-loop in a vertical circle of radius3.1110³m.During this performance the pilot whose weight is653N,maintains a constant speed of2.0010²m/s. (a)When the pilot is at the highest point of the loop determine his apparent weight in N.

(b)At what speed, in m/s, will the pilot experience weightlessness?

(c)When the pilot is at the lowest point of the loop determine his apparent weight in N