## Physics: Principles with Applications (7th Edition)

If the centripetal acceleration is at least equal to $g$, then the people on the ride will not fall out. Therefore: $\frac{v^2}{r} = g$ $v = \sqrt{gr} = \sqrt{(9.80 ~m/s^2)(8.6~m)}$ $v = 9.2 ~m/s$ The minimum speed is 9.2 m/s.