{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

L1-Fluids - Fluids and Bernoullis Equation Prof John Conway...

Info icon This preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Fluids and Bernoulli’s Equation Prof. John Conway Physics 7B - Lecture 1
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
imagine a cube, 1 meter on a side... 1 liter = 1000 cm 3 = 1000 ml 1 m 3 = 1000 liter 1 cm 3 = 1 ml 1 kg H 2 O 1000 kg H 2 O
Image of page 2
Density we can think of density as the amount of something per unit volume mass density = kg/m 3 usually use Greek symbol rho = ρ (not p !) density of water ρ water = 1000 kg / m 3
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Pressure weight = force of gravity = mg (g = 9.8 m/s 2 ) pressure = force per unit area what is the pressure at the bottom of our cubic meter of water? weight of cube (1000 kg)(9.8 m/s 2 ) = 9800 N pressure on bottom 9800 N/m 2 = 9800 Pa
Image of page 4
Pressure what if we just had a narrow column? Would the pressure at the bottom be the same?
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Fluid Pressure pressure is force per unit area in a fluid, pressure pushes in all directions pressure varies with depth in a gravitational field: need to hold up column of fluid above! force = weight = mg = ρ Adg pressure = force/area = ρ gd
Image of page 6
Atmospheric Pressure atmospheric pressure at sea level: 1 atm = 101325 Pa also measured in bars (1 bar = 1 atm), 760 mmHg = 760 torr, ... In our discussions always remember that there is atmospheric pressure, and if a fluid is open to the atmosphere, that’s what the pressure in the fluid is at that point!
Image of page 7

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}