Originally Posted by **vinson24** when i plug in the values i get 20.0g(29.0ft)=v^{2}
that gives me 24.08gft but the book says the answer is .749rev/s |

First you are using the wrong formula for acceleration, as sa-ri-ga-ma pointed out. The correct equation is v^2 =

ω^2/R. And second, you are mixing up units. You have R = 20 ft, and the acceleratoin is 20 g = 20 x 32 ft/s^2 = 640 ft/s^2. So::

ω^2 = (640 ft/s^2) /29ft) = 22.07 /s^2.

ω = sqrt (22.07/s^2) = 4.7 radians/s. Rev/Sec = Rzdians/sec /(2 pi), so: Rotatoinal speed in revs per second = 4.7 radians/s /(2 pi)