Problem 4-62 Centripetal acceleration
An astronaut in training is spinning around in a device that rotates at 30 revolutions per minute. (a) If the astronaut is \(7.5\; m\) from the centre of the device, what is the magnitude of the centripetal acceleration? (b) Express the answer in terms of "\(g,\)" the magnitude of the acceleration due to gravity.
[Ans. (a) \(74\; m/s^2\) (b) \(7.6\; g\)]
The expression for centripetal acceleration is:
(A) \(a_c = v^2/r\)
(B) \(a_c = 4\pi ^2r/T^2\)