When you’re in a car or a train (I’ll use a train as an example because you can walk around on it), you can barely notice that you’re moving unless you’re accelerating or decelerating. This is because you have no other speed to compare your current speed to. If you’re going 50MPH and then speed up to 60MPH, you feel the difference. But once you’re going 60MPH, it feels about the same as 50MPH did.
When you slow down to your slowest possible speed, and then completely stop, you feel that train stop. You grab onto a pole so you don’t fall, even though the slowing down didn’t affect you at all.
Try it yourself: Next time you’re in a car, go as slow as possible, and then stop. You will always jerk forward a little, no matter how gradual you slow down.
So what would happen if the planet stopped rotating?
Earth spinning is a lot like a train moving. It’s moving at a constant speed and we can walk around on it as we please and not be affected by it at all.
So first of all, if the Earth sped up or slowed down, I think we would finally notice the feeling of a rotating planet. Now, if it slowed down and then came to a complete stop, I think we would all fall on our faces and wish we had a bar to grab on to like the train does.
When something in our life never changes, we don’t really pay it any attention. For all we know, the whole Universe could be moving uniformly at the speed of light and we would never know unless we somehow looked at something outside of the universe (like looking out of the window of a moving train and seeing buildings ‘pass by’).
This is all a part of my theory that everything (and yes I mean everything) is based on a comparison… but I’ll save that for another day.