For example, we have a bottle filled with water to the point when there’s no space left in that bottle, is the water still moving as we shake the bottle?

Question

For example, we have a bottle filled with water to the point when there’s no space left in that bottle, is the water still moving as we shake the bottle?

In: Physics

Answer 1

Assuming a really perfect 100% fill with water and no air or empty space, there is pretty much zero movement.

There is something to be said about the water pressure being higher in the parts closer to the ground (because of the weight of the water above)

and also in the parts opposite the direction of any force being applied to the bottle while shaking (because it’s being mushed against that side by the rest of the water)

BUT, water doesn’t condense very much at all with these tiny pressure differences. So it wouldn’t result in any detectable movement.