normal reaction
What normal reaction means in Mathematics A-Level, as defined for AQA, Pearson Edexcel, WJEC.
Definitions of normal reaction
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Reference: WJEC
The force R in the friction model, which is calculated by balancing forces perpendicular to the contact surface.
Found by resolving perpendicular to the surface, where the sum of forces perpendicular equals zero.
The force found by resolving perpendicular to the rough surface, used with μ in the friction model.
A contact force exerted by a surface on an object, acting perpendicular to the surface at the contact point.
The contact force exerted by a surface on a particle, acting perpendicular to the surface.
Topics that use normal reaction
- R: Forces and Newton’s laws (AQA A-Level)
- Forces and Newton’s laws (Pearson Edexcel A-Level)
- Moments (Pearson Edexcel A-Level)
- Forces and Newton’s laws (A2 Unit 4: Applied Mathematics B) (WJEC A-Level)
Related terms
- limiting equilibrium
- coefficient of friction
- Equilibrium
- Resultant force
- force
- friction
- Newton's first law
- Newton's second law
Using normal reaction in the exam
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