1. The problem statement, all variables and given/known data Imagine that NASA plans to builds a large donut-shaped space station. The station will rotate in outer space in order to simulate gravity. If the station has a radius of 200m, what must be its rotation speed in revolutions per minute, to produce an artificial gravity of 0.8 g? 2. Relevant equations ac=v^2/r rev/min = 60v/2pi*r 3. The attempt at a solution Okay, so I have somewhere in my notes that if ac = g then T = 0. So I replaced ac with 0.8. So my equation went 0.8 = v^2/(200m). So I got my v = 12.65 m/s. Then I plugged my v into rev/min at 60(v)/2pi*r and I got my answer to be 0.604 rev/min. I was just wondering if I did this right?