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GCSE Combined Science · key term
A state in which the forces balance, so the resultant force is zero.
Used by AQA and Edexcel
Specification 6.5.1.4, 6.5.4.2.3 · Paper 6
Revise: Resultant ForcesThe book is in equilibrium.
A state in which the forces acting on an object are balanced, so its resultant force is zero and it does not accelerate.
Paper 5, Paper 6
A situation in which the resultant force on an object is zero, so it has no acceleration.
Revise: Newton’s third law and momentumAn object is in equilibrium when its resultant force is zero. It has no acceleration, so it can remain at rest or move at constant velocity.
The condition in which forces balance and the resultant force is zero, so there is no acceleration.
When explaining equilibrium, consider the forces acting on one object. Do not cancel forces that act on different objects.
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