Centripetal Force Question?

Question

A device for training astronauts is designed to rotate the trainee in a horizontal circle of radius 11.5 m. If the force felt by the trainee is 7.18 times her own weight, how fast is she rotating?

Now, express your answer in revolutions per second.

How would you solve this problem?

Answer 1

m(v)(v)/r= 7.18 mg or m(v)(v)/11.5 = 7.18 mx9.8
v = sqrt(7.18x9.8x11.5) = 28.446 m/s