I had and I still have problems to understand centrifugal artificial gravity in space. Thanx to some videos I managed to understand it better and how it can work. But for me it is silly.
I dont know how exactly I can explain why it looks silly to me because my English is very limited. But Ill try if someone would want to try and explain it to me why everywhere it is shown in same way.
So to be able to feel any Gs in centrifugal station solution we must have speed of outside of that spinning circle. So from center we must use ladder and go from center to that outside ring.
But then I think that it would be hard to hold balance while standing on that outside ring that will act as "floor".
And moving in direction with ring movement would be different than moving opposite (different G force).
That is how I think about that artificial gravity solution.
In this video
https://www.youtube.com/watch?v=9QuLgl2vKis guy using kerbal space program game tried to achieve that and explain all that centrifugal artificial gravity.
Here is real life experiment.
https://www.youtube.com/watch?v=2EHwT33YCAw
Here are another explanation of centrifugal artificial gravity with some examples used in movies.
https://www.youtube.com/watch?v=WdECeGRXIxQ
Here are some informations and examples of artificial gravity.
http://www.racetomars.ca/mars/ed-module/artificial_gravity/
What bothers me is that in most of that experiments about centrifugal artificial gravity is that they try to always put humans on outside ring. For me it is weird.
I wonder why they dont want to use solution that would make floors that would direct rotation force directly under human and giving him ability to hold balance without problems.
Here is pic that I created showing what I mean.
In my opinion option 2 is most reasonable.