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← Topic 4 overviewTOPIC 4 ASSESSMENT

Forces, density and pressure

CIE-style questions assess moments, couples, equilibrium, density and fluid pressure.

Objective question 1

The moment of a force about a point is force multiplied by:

Objective question 2

A couple has:

Objective question 3

Complete equilibrium requires:

Objective question 4

1.0 g cm⁻³ equals:

Objective question 5

The pressure difference between two depths in one liquid is:

Structured question 1

A 30 N force acts perpendicularly 0.40 m from a pivot. Calculate its moment.

Structured question 2

A sample has mass 0.60 kg and volume 2.5 × 10⁻⁴ m³. Calculate its density.

Structured question 3

Calculate the pressure difference across 2.0 m of water of density 1000 kg m⁻³. Use g = 9.81 N kg⁻¹.