Chapter 5
Pressure
Pressure relates a force to the area over which it acts.
Spaced review
Remember this chapter
Save this chapter's 5 recall cards. We'll bring each one back just before you're likely to forget it, a few minutes a day.
Free account needed, so your cards follow you to any device. Notes and quick recall stay free without one.
Choose a lesson
Pressure at a surface
Relate pressure to perpendicular force and contact area, and convert areas correctly.
Density from measurements
Measure mass and volume, calculate density and use consistent units.
Pressure in a liquid
Relate pressure to vertical depth and distinguish the liquid contribution from total pressure.
Hydraulic systems
Explain transmitted pressure and calculate forces on pistons with different areas.
Measuring atmospheric pressure
Explain how a barometer's liquid column measures atmospheric pressure.
Manometers and pressure differences
Read a liquid-level difference and use the reference pressure to calculate a gas pressure.