Bernoulli's equation is only valid if the following assumptions are true: - system is at [[steady state]] - fluid is [[incompressible]] - fluid is Newtonian $\frac{v^2}{2}+gz+\frac{p}{\rho}$ = constant at all points in a fluid where: $v$ = speed of fluid flow $g$ = acceleration of gravity $z$ = elevation in the direction opposite to gravity $p$ = fluid pressure $\rho$ = density (constant at all points, bc fluid is incompressible) ![[Untitled 23.jpg]] ![[VenturiFlow.jpg]] Bernoulli's equation can be derived from the [[Conservation of Energy]] or from [[Newton's Second Law]] $\rho gz$ is the [[fluid static pressure]]