Explore the Under Pressure: Fluid Pressure & Depth
Drag a pressure gauge into a tank and see how depth, density and gravity change pressure. Free, no signup, runs in your browser.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
Illustration. Open the tool for the real thing.
See it in action
The Under Pressure: Fluid Pressure & Depth with sample data entered and the result showing.
What is the Under Pressure: Fluid Pressure & Depth?
Drag a pressure gauge into a tank and see how depth, density and gravity change pressure. It runs in your browser, so a change to a setting or a drag on an object shows up at once.
Divers, submarines, dams and water towers are designed using fluid pressure.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
P = P₀ + ρ g h.
Pressure increases with depth.
Pressure depends on density and gravity but not on the shape of the container.
Drag the gauge to 3 m depth in water.
Switch to mercury.
Turn off the atmosphere and see the gauge fall.
Used for
Pick one to see how it fits.
Physics learners
Physics students in middle school, high school and first-year university, teachers who want a quick demonstration for the projector, and anyone revising for exams.
Try it freeTeachers
For teachers: project the Under Pressure: Fluid Pressure & Depth on the board, let students predict the result, then run it together and test this: Switch to mercury. For students: change one thing at a time and write down what changes.
Try it freeHow it compares
A plain look at this tool next to the usual alternative.
| This simulation | Textbook diagram | |
|---|---|---|
| Interactive | Drag, tap and change settings | Fixed picture |
| Install | Nothing to install | Not needed |
| Cost | Free to use | Depends on the book |
Questions people ask
Why does pressure increase with depth?
The liquid above pushes down, so more depth means more weight above.
Does the shape of the tank matter?
No. At the same depth the pressure is the same, whatever the shape.
Is the Under Pressure: Fluid Pressure & Depth free to use?
Yes. The Under Pressure: Fluid Pressure & Depth is free, needs no signup or download and runs in your web browser. It is part of the Physics group of AZRS simulations.
Does the Under Pressure: Fluid Pressure & Depth work on a phone or tablet?
Yes. The Under Pressure: Fluid Pressure & Depth takes touch input as well as mouse input, so you can use its 6 adjustable settings with a finger. A larger screen makes the controls and graphs easier to read.
How do I use the Under Pressure: Fluid Pressure & Depth?
1. In the Under Pressure: Fluid Pressure & Depth, use the controls to change Liquid, Gravity, Air above, Tank shape, Faucet (fill), and more. The simulation reacts instantly. 2. In the Under Pressure: Fluid Pressure & Depth, pick an option such as Gasoline 700, Water 1000, Honey 1420, Mercury 13600 to switch modes or load an example. 3. Start with this experiment: Drag the gauge to 3 m depth in water. Drag any glowing handle, object or slider with your mouse or finger and the Under Pressure: Fluid Pressure & Depth responds in real time. 4. Change one setting at a time and watch which readout moves, then compare it with this idea: P = P₀ + ρ g h.
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Try the Under Pressure: Fluid Pressure & Depth now
Drag a pressure gauge into a tank and see how depth, density and gravity change pressure. Free to use.
Try it free