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ZIMSEC O-Level Physics

3.5Centre of mass

Centre of mass 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: centre of mass and centre of gravity.

Learning objectives

What the syllabus expects you to be able to do.

  1. 3.5.1Define centre of mass and centre of gravity.
  2. 3.5.2Find the centre of mass of a plane lamina by experiment.
  3. 3.5.3Describe qualitatively how the position of the centre of mass affects stability (stable, unstable and neutral equilibrium).

Lessons

  • Centre of gravity and stability

    20 min

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Sample question

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

Centre of mass: sample question

1 mark

Where is the centre of gravity of a thin uniform ring (like a bangle)?

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