IP Physics Notes (Upper Secondary): 4) Turning Forces
IP Physics notes on the turning force formula, equilibrium, centre of gravity, and stability, with Eclat applications and practical curriculum boundaries clearly labelled.
For Integrated Programme students: Your current school materials, teacher instructions, and assessment scope take precedence because IP topic sequence and depth vary by school. This is an Eclat IP guide, not the O-Level / SEC G3 exam-track guide.
The core idea is simple: Moment equals force times perpendicular distance from the pivot.
Use it as a working check: Balance turning effects by matching clockwise and anticlockwise moments. Stability depends on where the centre of gravity falls relative to the base.
Then go one layer deeper: Use the beam and stability examples to practise marking the pivot, measuring perpendicular distances, writing moment equations, and checking force balance.
Keep your practice loop tight via our IP Physics tuition hub. It links each topic here to quizzes, diagnostics, and WA-style problem sets.
New to the Integrated Programme? Start with What is IP? | Browse all free IP notes.
How this chapter applies
- Eclat core: turning effect, the moment equation, the principle of moments, centre of gravity, and qualitative stability. These are broadly useful foundations, but your school's current sequence still controls.
- Eclat application extension: lever classes and human-body applications deepen the Eclat core but may not appear in every school's assessed sequence.
- Eclat practical core: Marcus Pang's sequence requires the suspend-and-plumb investigation. K323 Topic 4 does not name this method, so follow your school's assessed scope.
- Eclat route design: the wider 17-chapter route blends the three thermal topics and pairs Waves with the Electromagnetic Spectrum because IP questions often assess these ideas together. This chapter remains distinct because it has its own problem-solving and practical demands.
- 2027 national comparison: the Eclat core overlaps with Topic 4, Turning Effects of Forces, in SEC G3 Physics K323. K323 is a coverage comparator for this IP chapter, not the controlling IP syllabus.
- Check your school: no Turning Forces-specific school difference is currently verified in Eclat's curriculum evidence. Follow your current assessment or teacher scope when deciding what is assessed.
- Exam-track route: use the separate O-Level and SEC G3 Physics notes for K323 topic ownership.
Moment of a Force
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