pressure
Terms
undefined, object
copy deck
- Fluid Pressure
- All forces exerted by the individual molecules in a fluid that add together to make up the pressure exerted
- Bernoulli's Principle
- States that the pressure exerted by a moving stream a fluid is less that the pressure of a surrounding fluid
- SI unit of Pressure
- Pascal PA or newton per square meter(N/m)
- Pascal's Principal
- When force is applied to confined fluid, an increase in pressure is transmitted equally to all parts of the fluid
- fluid
-
a substance whose shape can
easily be change - Buoyancy
- water exerts force called the buoyance force, this acts in the upward direction, against the force of the gravity, so it makes it feel lighter
- Calculating Pressure
-
pressure= Force
Area - Archimedes Principle
- States that the buoyant force on an object is equal to the weight of the fluid displaced by the object
- Pressure/Fluid
-
The pressure within a fluid is
the same at any given level an exerted in all directions - Pressure and Elevation
-
air pressure decreases
as elevation increases - Density
-
Density= Mass
Volume - Hydraulic System
- Multiplies a force by applying the force to a small surfce area. the increase in pressure is then transmitted to another part of a confined fluid, which pushes on a larger surface area
- Densities of substances
- Change the density of a substance can make it float oer sink
- pressure exerted by a fluid
- all the forces exerted by the individual molecules in a fluid add together to make up the pressure exerted by the fluid
- Pressure and Depth
-
Fluid pressure depends on depth.
Water pressure increases as
depth increases. - Sinking / Floating
- An object that is more dense that the fluid which it is immeresed sinks. An object that is less dense that the fluid which it is immersed floats to the surface.