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thisisjustascreename t1_j0aeanx wrote

This answers "the question" but it fails to answer the actual point of the question.

What if I get in a car and drive 75 mph against the rotation?

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ok46reddit t1_j0afkf7 wrote

The car would loose control as it nears 70 mph and crash into something.

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thisisjustascreename t1_j0ag33o wrote

What if it’s a flat cylinder with infinite coefficient of friction and nothing to crash into

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ok46reddit t1_j0ahc45 wrote

To be fair, it depends on the aerodynamics of the car. But let's say that somehow the aerodynamics are neutral, it just experiences drag, but the airflow does not result in a net uplift or push down the car. At a certain point approaching 70 mph the tires would start to lose traction and would not be able to provide enough friction to overcome air resistance. It might even happen well before that speed depending on the actual air drag. But it would never be able to achieve 75 mph.

But let's say that there is aerodynamics that push the car down as its relative speed increased. As it approaches the speed of the ring, about 70 mph, the driver would feel weightless, but because the car is aerodynamically coupled to the surface it could still go faster, and as it does the driver would start to feel the sensation of weight returning.

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