How does the stomach work in space? Do astronauts feel constant need to throw up since the contents are bouncing around inside?
In: Biology
It’s important to realize there’s no relative acceleration in space and that lack of relative acceleration results in no relative forces. (The food in your stomach isn’t exerting a force on your body and vice versa)
If you ate something and stood up, the food is pulled down on your stomach at a force equal to its weight. If you ate something and then did a handstand, it’s being pulled (up relative to you) at at a force equal to its weight. This may be unpleasant which is where the question probably comes from.
However, in space there is no relative acceleration between you and the food in your stomach. Therefore, there are no real forces pulling the food out of your stomach.
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