Physics A-Level
Pythagoras check
What Pythagoras check means in Physics A-Level, as defined for AQA.
Definition of Pythagoras check
Check what you remember
Read the wording for your board, then hide it and explain Pythagoras check in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Confirms resolved components using Fx² + Fy² = F², catching a swapped sine and cosine.
Topics that use Pythagoras check
- Scalars and vectors (AQA A-Level)
Related terms
- Coplanar forces at a point
- Displacement
- Equilibrium
- Equilibrium conditions
- Free-body diagrams
- Measurement accuracy
- Newton's laws apply along each axis independently
- Perpendicular components
Using Pythagoras check in the exam
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