Physics 9702 · AS & A Level · Density and pressure

Density and pressure — practice question

Deriving the pressure equation $\Delta p = \rho g \Delta h$ involves several relationships between quantities. Which relationship is not included in the derivation of this equation?

  • Adensity = $\frac{\text{mass}}{\text{volume}}$
  • Bpotential energy = mass $\times$ acceleration of free fall $\times$ height
  • Cpressure = $\frac{\text{force}}{\text{area}}$
  • Dweight = mass $\times$ acceleration of free fall

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