I want to know if moving along a vertical plane in a circle differs in its effects on the human body from moving horizontally in a circle. Imagine a ferris wheel with a diameter of 50 metres. If a person on it was travelling at 10miles an hours, would they get less dizzy than a person travelling on a roundabout or carousel with a diameter of 50 metres travelling at 10mph?
The inner part of your ear contains fluids that controls how dizzy you feel, with no consideration for direction. I believe astronauts feel dizzy for the initial day or so, before their body adjusts to liquids, if that helps you visualize it. However, on earth, I’d be inclined to say that horizontal would be better due to gravity and the direction the normal force of the fluids is pointing, but I could totally be wrong. Hope that helps.