Equations Of Motion Flashcards
1
Q
F = ma?
A
acceleration = force per unit mass
delta v / delta t = F / m
2
Q
gravity?
A
F = mg
3
Q
Pressure gradient?
A
F / m = - 1 / density x (delta P / delta x) = pressure gradient in the x direction
4
Q
Coriolis force?
A
F / m = fv or -fu
size of force depends on speed or flow in the other direction
5
Q
Coriolis parameter?
A
f = 2 w sin theta w = angular velocity of earth theta = latitude
6
Q
Hydrostatic equation?
A
Delta P = - density x g x delta z
7
Q
Other forces?
A
friction / wind stress
8
Q
Continuity equation?
A
need a forth equation to solve fluid dynamics in 3 dimensions
9
Q
What happens when you squash a fluid?
A
expansion and an increase in density
10
Q
what happens if density is constant?
A
delta density = 0
