Liquid Pressure
Exploration of the Law of Liquid Pressure
Control Panel
10 cm
Measurements
Density1.00 g/cm³
Pressure980.0 Pa
U-Tube Δh10.0 cm
U-Tube Liquid Density1.00 g/cm³
Key Step: Check Airtightness
Before starting, check if the device leaks (common exam point):
Operation:Gently press the rubber membrane.
If Leaking:No movement or slight movement = Leak. Reconnect hose.
Physics Principle
P = ρgh
Liquid pressure (P) depends on the density of the liquid (ρ), gravity (g), and depth (h).
At the same depth, liquid pressure is equal in all directions.