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ZIMSEC O-Level Physics

3.4Turning effect of a force

Turning effect of a force in ZIMSEC O-Level Physics: what the syllabus expects you to know, the learning objectives and how to practise.
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Overview

Form 3.

Learning objectives

What the syllabus expects you to be able to do.

  1. 3.4.1Define the moment of a force.
  2. 3.4.2Describe the moment of a force as its turning effect and give everyday examples.
  3. 3.4.3Carry out an experiment to verify the principle of moments.
  4. 3.4.4Calculate using the principle of moments.

Lessons

  • Moments and the principle of moments

    30 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Turning effect of a force: sample question

1 mark

A force of 45 N45\ \text{N} is applied at right angles to a door, 0.80 m0.80\ \text{m} from its hinges. Calculate the moment about the hinges.

Answer in N m.

Turn Turning effect of a force into a strength.

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