what is the variation of pressure with force
Answers
If your ears have ever popped on a plane flight or ached during a deep dive in a swimming pool, you have experienced the effect of depth on pressure in a fluid. At the Earth’s surface, the air pressure exerted on you is a result of the weight of air above you. This pressure is reduced as you climb up in altitude and the weight of air above you decreases. Under water, the pressure exerted on you increases with increasing depth. In this case, the pressure being exerted upon you is a result of both the weight of water above you and that of the atmosphere above you. You may notice an air pressure change on an elevator ride that transports you many stories, but you need only dive a meter or so below the surface of a pool to feel a pressure increase. The difference is that water is much denser than air, about 775 times as dense.
Answer:
The reason for the increased pressure is that the deeper into a fluid you go ,the more fluid ,and thus the more weight ,you thave over top of you. We can calculate the variation of pressure with depth, by considering a volume of fluid of height h and cross-sectional area A .Pa, which is atmosthpheric pressure.