Physics › Section H · Fluids › Topic H.2
Pressure with depth, Pascal's principle, gauge pressure
Dive to the bottom of a pool and your ears tell you the pressure has risen. The same simple rule, that a fluid must hold up its own weight, explains water towers, car brakes, hydraulic lifts and the gauges used to read pressure.
In this topic
- Why pressure grows with depth
- Total pressure and container shape
- Worked example: a diver on a reef
- Pascal's principle
- Hydraulic systems
- Worked example: a garage lift
- Gauge pressure and absolute pressure
- Measuring pressure
- Worked example: a gas line manometer
- Common mistakes to avoid
- Key takeaways
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