Answer
The velocity is 28.3 m/s which is 0.409 rev/s
Work Step by Step
We equate the centripetal force to the force felt by the trainee:
$\frac{mv^2}{r} = 7.45~mg$
$v^2 = 7.45~gr$
$v = \sqrt{7.45~gr} = \sqrt{(7.45)(9.80~m/s^2)(11.0~m)}$
$v = 28.3~m/s$
We can use the velocity $v$ to find the number of revolutions per second:
$\frac{v}{2\pi r} = \frac{(28.3~m/s)}{(2\pi)(11.0~m)} = 0.409~rev/s$
