Equations - Fluids

These are the equations that you should know.  Updated January 23rd.

 

This list is now complete.

 

Flow Rate (speed)

= Distance Travelled

Time

Measured in m/s (meters per second)

Flow Rate (quantity)

= Volume of Fluid Passing a Specific Point

Time

Measured in ml/s (millilitres per second)

Density

=    Mass       

Volume

Measured in g/ml or g/cm3 (grams per milliliter or grams per centimeter cubed)

Force of Gravity = Mass x 9.8 N/kg

Measured in N (Newtons)

Archimedes' Principle The buoyant force acting on an object equals the weight of the fluid displaced by the object.
Pressure

 Force     

Area

Measured in Pa (Pascals)

Pascal's Law

Pressure exerted on a fluid is transferred uniformly throughout.