Centrifugal spaceship

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What would you think of a spaceship that used concentric rings, made up of segments (each of which would be a ship capable of acting as a lifeboat in space and water landings), attached to spokes like that of a wagon wheel?

If the whole ship is a set of concentric circles, and if the whole thing rotates in unison then the outer parts would get more centrifugal force then the inner parts because they would be rotating faster (like the tire rotates faster than the hub). Ideally you want rotation at just the right speed to duplicate Earth gravity.

I suppose that you could construct it so each ring rotates independently.

Okay, so which is it then?

What yields the centrifugal force that creates artificial gravity? Angular velocity (rpms)? Or tangential velocity(rim speed)?

Been googling just now, but cant find a clear answer.

But every science and sci fi thing I've ever read implies that its actual speed, and not angular velocity.

The axis of the scientifically proposed (or fictionally imagined) spinning cylindrical space colony is always said to be at zero G, while the inside of the outer hull wall (the floor that the folks walk on) is always supposed to be at one G( simulating Earth gravity). In between the floor and the overhead spinning axis it's supposed to be at gradually changing intermediate fractions of one G that gradually approach zero as you approach the axis of spin overhead.That's presumably because the differing distances from the spin axis move at different mph (rim speeds) even though they have the same rpm (angular velocity).