All Flashcards
What is the effect of increasing the force applied to a constant area?
Increased pressure.
What is the effect of decreasing the area over which a constant force is applied?
Increased pressure.
What happens to gauge pressure as depth increases in a fluid?
Gauge pressure increases linearly.
What causes fluid pressure?
Countless tiny collisions of fluid particles against a surface.
What happens when the pressure inside a container is higher than the pressure outside?
Fluid will flow out of the container.
What are the key differences between absolute and gauge pressure?
Absolute Pressure: Total pressure including atmospheric pressure. | Gauge Pressure: Pressure relative to atmospheric pressure.
Compare compressible and incompressible fluids.
Compressible fluids: Volume and density change under pressure (e.g., gases). | Incompressible fluids: Volume and density remain constant under pressure (e.g., liquids).
What is the difference between pressure and force?
Force: A vector quantity with magnitude and direction. | Pressure: A scalar quantity representing force per unit area, acting equally in all directions.
Define Pressure (P).
Pressure is the measure of how concentrated a force (F) is over an area (A).
What is an incompressible fluid?
A fluid that maintains constant volume and density even under pressure (e.g., water, oil).
Define Absolute Pressure (P).
Total pressure, including atmospheric pressure ().
Define Gauge Pressure ().
Pressure relative to atmospheric pressure.
What is the formula for gauge pressure as a function of depth?
, where is fluid density, is gravity, and is depth.
What is the relationship between force, pressure, and area?
Pressure equals force divided by area: