Fluid Hydrostatics Flashcards
Hydrostatics
Fluids not in motion
Buoyancy
Where an object floats or not in liquids
Specific gravity
The degree to whether an object floats or sink
EX) a floating cork board has a specific gravity of 0.2 so it will float it water with only 20% of it submerged
% submerged
Density of object/ density of liquid X 100
F_buoyant
(rho)Vg
Density of liquid
Volume displaced
Pascals law
A change in pressure will be evenly distributed throughout the system
Pressure
Force/area
Surface tention units
Force/ length or N/m
energy/area or J/m^2
More surface tension means what for energy?
More energy
Cohesion
Effect of intermolecular forces in a substance
in other words, stick together
Adhesion forces
Stick to something else
If adhesion forces are stronger than the intermolecular forces
liquid will crawl up walls of container
liquid becomes curved (meniscus)
If adhesion forces are weaker than the intermolecular forces
The fluid concentrates at center (convex meniscus)
