How Do Density, Gravity, and Height Equate to Pressure?

  • Thread starter Thread starter cytochrome
  • Start date Start date
  • Tags Tags
    Pressure Units
AI Thread Summary
The discussion centers on the relationship between density, gravity, height, and pressure in fluid dynamics. It highlights the equation where pressure is derived from the product of density, gravity, and height, leading to the unit analysis of pressure as force per area. The participant expresses confusion over the units involved, specifically how they relate to pressure. The conversation reflects the challenges faced while studying complex topics like fluid dynamics, especially late at night. Ultimately, the discussion illustrates the importance of clarity in understanding fundamental physics concepts.
cytochrome
Messages
163
Reaction score
3
How is (density)(gravity)(height) supposed to equal pressure?

density = kg/m^3
gravity = m/s^2
height = m

(kg/m^3)(m/s^2)(m) = (kg/m*s^2)
 
Physics news on Phys.org
Pressure is force/area. What do those units work out to?
 
jtbell said:
Pressure is force/area. What do those units work out to?

Wow nevermind... I'm having one of those late nights working on fluid dynamics homework and I started confusing myself with my tiredness
 

Thread 'Average velocity as a weighted mean'

Hello everyone, Consider the problem in which a car is told to travel at 30 km/h for L kilometers and then at 60 km/h for another L kilometers. Next, you are asked to determine the average speed. My question is: although we know that the average speed in this case is the harmonic mean of the two speeds, is it also possible to state that the average speed over this 2L-kilometer stretch can be obtained as a weighted average of the two speeds? Best regards, DaTario
View full post »

Thread '1:1 versus 2:1 Mechanical Advantage debate'

The rope is tied into the person (the load of 200 pounds) and the rope goes up from the person to a fixed pulley and back down to his hands. He hauls the rope to suspend himself in the air. What is the mechanical advantage of the system? The person will indeed only have to lift half of his body weight (roughly 100 pounds) because he now lessened the load by that same amount. This APPEARS to be a 2:1 because he can hold himself with half the force, but my question is: is that mechanical...
View full post »
Thread 'Beam on an inclined plane'

Thread 'Beam on an inclined plane'

Hello! I have a question regarding a beam on an inclined plane. I was considering a beam resting on two supports attached to an inclined plane. I was almost sure that the lower support must be more loaded. My imagination about this problem is shown in the picture below. Here is how I wrote the condition of equilibrium forces: $$ \begin{cases} F_{g\parallel}=F_{t1}+F_{t2}, \\ F_{g\perp}=F_{r1}+F_{r2} \end{cases}. $$ On the other hand...
View full post »

Similar threads

I Calculating Water Pool Depth: Factors to Consider in Fluid Dynamics
Replies
13
Views
2K
I Lift Force of a Rotating Sphere in the Air
Replies
7
Views
3K
A The effect of perpendicular wind at channel inlet
Replies
12
Views
1K
What is the approximate pressure at the center of a cool Earth with no gravity?
Replies
1
Views
2K
Not sure Exactly what Pressure I am Solving for in this Form
Replies
13
Views
2K
How to get the units of momentum flux?
Replies
3
Views
5K
I Collision when a falling tank impacts the surface of a lake
Replies
7
Views
2K
Question: pressure inside an object submerged in water
Replies
25
Views
6K
Using the lift equation, can you make anything fly?
Replies
24
Views
6K
I Behavior of Clamped-Edge Circular Membrane
Replies
32
Views
2K

Hot Threads

Recent Insights

Back
Top