PostHeaderIcon Astronaut Training Jet

Astronaut Training Jet



Astronaut Training Jet
Solve this physics problem?

A device for training astronauts and jet fighter pilots is designed to rotate a trainee in a horizontal circle of radius 12.0m. If the force is felt by the trainee on his/her back is 7.85 times her own weight, how fast is she rotating?

Express answer in m/s and rev/s

the normal force of the chair back on the pilot must equal the centripetal force, and we are told this is7.85 the weight of the pilot, so we have

N=7.85 mg = mv^2/r or v^2=7.85 g r

v^2 = 7.85×9.8m/s/s x 12m
v=sqrt[7.85x9.8x12]=30.4m/s

1 rev = 2 pi r = 2 pi x 12 m = 75.4m

v= 0.4 rev/s

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