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Human centrifuges are often used to simulate different acceleration levels for pilots. When aerospace physiologists say that a pilot is pulling 9 g’s, they mean that the resultant normal force on the pilot from the bottom of the seat is nine times their weight. Knowing that the centrifuge starts from rest and has a constant angular acceleration of 1.5 RPM per second until the pilot is pulling 9 g’s and then continues with a constant angular velocity, determine (a) how long it will take for the pilot to reach 9 g’s (b) the angle θ of the normal force once the pilot reaches 9 g’s.
Fig. P12.38
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