ZIMSEC O-Level Physics
4.1Simple machines
Simple machines in ZIMSEC O-Level Physics: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic24 practice questions2 lessons
Overview
Form 3. Levers, single-string pulley systems (at most six pulleys) and inclined planes; classification of levers is not required.
Learning objectives
What the syllabus expects you to be able to do.
- 4.1.1Describe the uses and applications of simple machines.
- 4.1.2Calculate mechanical advantage, velocity ratio and efficiency.
- 4.1.3Explain energy losses in machines.
- 4.1.4Describe methods of improving efficiency.
Lessons
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Efficiency
20 min
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Simple machines: levers, pulleys and inclined planes
30 min
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Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
Turn Simple machines into a strength.
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