gokuls said:Two questions:
1. Why is it that pressure exerted by fluids is not dependent on the amount of fluid around the point, only above?
2. Why is it that in deep wells, pump located underwater is better than a pump located on ground level?
Fluid pressure is the force per unit area exerted by a fluid, such as a liquid or gas, on the walls of its container or any object placed in the fluid. It is measured in units of pressure, such as Pascals or pounds per square inch (psi).
Fluid pressure can be calculated using the equation P = F/A, where P is pressure, F is force, and A is area. This means that the greater the force applied to a smaller area, the higher the fluid pressure will be.
Fluid pressure is affected by the density and depth of the fluid, as well as the force and area of the object or container that is in contact with the fluid. Gravity can also play a role in affecting fluid pressure.
Fluid pressure has many practical applications, such as in hydraulic systems, where pressurized fluids are used to transmit force and energy. It also plays a role in scuba diving, where divers must carefully monitor the pressure of the surrounding water to avoid health risks. In addition, fluid pressure is important in weather systems, as changes in air pressure can cause winds and storms.
Fluid pressure is directly related to buoyancy, which is the upward force exerted by a fluid on an object immersed in it. This means that an object placed in a fluid will experience an upward force equal to the weight of the fluid it displaces. This is known as Archimedes' principle and explains why objects float or sink in fluids.