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CAIE A-Level Physics AS 4.3.4 The Equation P G H Questions

Apply the equation Δp = ρgΔh to calculate pressure differences in a fluid of density ρ over depth Δh.

Syllabus
2028–2030
Course
Physics 9702
Level
AS

Exam points

  • Apply the equation Δp = ρgΔh to calculate pressure differences in a fluid of density ρ over depth Δh.

CAIE A-Level Physics AS 4.3.4 The Equation P G H Questions question 1

[Maximum number: 3]

A beaker in air contains a liquid. The base of the beaker is in contact with the liquid and has area A, as shown in Fig. 4.1.

Fig. 4.1

Fig. 4.1

The liquid has density ρ\rho and fills the beaker to a depth h.

Fig. 4.2 shows the variation of the total pressure inside the liquid with depth x below the surface.

Fig. 4.2

Fig. 4.2

Determine the density of the liquid.
density = kgm−3\mathrm{kg} \mathrm{m}^{-3}

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