6. Pressure in Liquids and Its Transmission
Pressure in liquids is influenced by depth, density, and gravitational acceleration, leading to increased pressure as depth increases. This chapter explains hydrostatic pressure, Pascal’s Law regarding the transmission of pressure in confined fluids, and the concepts of buoyancy and hydrostatic force. Additionally, it discusses various applications and implications, such as in hydraulic systems and measuring pressure using manometers.
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What we have learnt
- Pressure in liquids increases with depth and is affected by the density of the liquid.
- Hydrostatic pressure is exerted by a stationary fluid and increases with depth.
- Pascal’s Law states that pressure applied to an enclosed liquid is transmitted equally in all directions.
- Buoyant force equals the weight of the fluid displaced by an object.
- Hydrostatic force on a surface is determined by pressure and area.
Key Concepts
- -- Hydrostatic Pressure
- The pressure exerted by a liquid at rest, caused by the weight of the liquid column above the point being measured.
- -- Pascal's Law
- A principle stating that pressure applied to an enclosed fluid is transmitted undiminished to all parts of the fluid.
- -- Buoyant Force
- The upward force exerted by a fluid on an object placed within it, equal to the weight of the fluid displaced.
- -- Archimedes’ Principle
- States that an object submerged in a fluid experiences an upward buoyant force that equals the weight of the fluid displaced.
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