Equilibrium
What Equilibrium means in Mathematics A-Level, as defined for AQA, Pearson Edexcel.
Definitions of Equilibrium
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Reference: Pearson Edexcel
For a particle in equilibrium the resultant force is zero, so forces balance in two perpendicular directions, and under coplanar forces the vector sum of all forces is zero.
A situation where the resultant force is zero, so acceleration is zero, as for a stationary object or one moving at constant speed.
When forces balance, the resultant is zero and the particle is in equilibrium or moves with constant velocity.
The condition of a body when the resultant force on it is zero, covering both rest and constant velocity.
The state when the vector sum of forces is zero, allowing an unknown force to be solved for.
A state in which the resultant force and resultant moment are zero, so a rigid body has no linear or angular acceleration.
Topics that use Equilibrium
- R: Forces and Newton’s laws (AQA A-Level)
- Forces and Newton’s laws (Pearson Edexcel A-Level)
- Moments (Pearson Edexcel A-Level)
- Vectors (Pearson Edexcel A-Level)
Related terms
- limiting equilibrium
- normal reaction
- Resultant force
- coefficient of friction
- force
- friction
- Newton's first law
- Newton's second law
Using Equilibrium in the exam
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