One way to think about this is to put it in familiar terms. Instead of a spinning centrifuge, think of it as a steep hill. If you run fast enough down a steep enough hill, you can get some hang time. If you run up that hill, you're not going to run very fast. In a centrifugal space station, going downhill is moving opposite the direction of rotation, and going uphill is moving in the same direction as rotation. "Down", the direction that objects fall toward, won't follow a radius from the center but instead will be angled back against the direction of rotation and will vary with distance from the axis of rotation as a result of the coriolis effect