PhysicsCode 9702
Density and pressure
What this topic asks you to be able to do
- define and use density
- define and use pressure
- derive, starting from how pressure and density are defined, the equation ∆p = ρg∆h for the hydrostatic pressure difference
- apply the hydrostatic pressure equation ∆p = ρg∆h
- understand that a difference in hydrostatic pressure is what produces the upthrust on a body in a fluid
- work out the upthrust on a body in a fluid by means of F = ρgV (Archimedes’ principle)