Difference between revisions of "Fluid Pressure"
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<math> P</math> = [[Pressure]] at that depth. | <math> P</math> = [[Pressure]] at that depth. | ||
| − | <math> \rho</math> = [[Density]] of the [[fluid]] | + | <math> \rho</math> = [[Density]] of the [[fluid]] (This symbol is a 'rho' not a 'p') |
<math> g </math> = [[Gravitational Field Strength]] | <math> g </math> = [[Gravitational Field Strength]] | ||
<math>h</math> = [[Depth]] in the [[fluid]] | <math>h</math> = [[Depth]] in the [[fluid]] | ||
Revision as of 14:05, 11 February 2019
Key Stage 4
Meaning
Fluid Pressure is the force per unit area on a surface due to particles colliding with that surface.
About Fluid Pressure
- The force responsible for pressure in a fluid is the weight of all the particles above the object.
- The pressure in a fluid decreases with height and increases with depth. The deeper into a fluid the greater the pressure.
- Since pressure increases with depth then the bottom of an object will experience more pressure than the top of the object. This causes a force called upthrust.
Equation
Pressure = (Density of the Fluid) x (Gravitational Field Strength) x (Depth in the fluid)
\( P = \rho g h\)
Where\[ P\] = Pressure at that depth.
\( \rho\) = Density of the fluid (This symbol is a 'rho' not a 'p')
\( g \) = Gravitational Field Strength