The pilot of an airplane executes a constantspeed loop-the-loop maneuver in a vertical circle as in Figure 7.15b. The speed of the airplane is 2.00 x
102 m/s, and the radius of the circle is 3.20 x 103 m. (a) What is the pilot’s apparent weight at the lowest point of the circle if his true weight is 712 N? (b) What is his apparent weight at the highest point of the circle?
(c) Describe how the pilot could experience weightlessness if both the radius and the speed can be varied. Note: His apparent weight is equal to the magnitude of the force exerted by the seat on his body. Under what
conditions does this occur? (d) What speed would have resulted in the pilot experiencing weightlessness at the top of the loop?
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