I am not sure about the pressure existing in fluids.If the vertical pressure acts due to gravity and the atmospheric pressure since it also changes due to height also acts due to gravity then why is there horizontal pressure in a liquid. If there is then is it also equal to the vertical pressure at the point?
If gravity is suddenly stopped then do we still have water pressure and atmospheric pressure? In air is pressure equal in all directions? An interesting theory one of my friends explained is that if there is a box of air in space with no gravity and they have a velocity in one direction and due to elastic collisions there is pressure in all directions. But is it so that pressure in liquids act only due to moving molecules colliding randomly if there is no gravity?
Any explanations would be appreciated.
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