Newton's third law
What Newton's third law means in Physics GCSE, as defined for AQA, OCR.
Definitions of Newton's third law
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Reference: OCR
When body A exerts a force on body B, body B exerts an equal-sized force on A in the opposite direction.
The magnet experiences an equal and opposite force to the force the conductor experiences.
Whenever two objects interact, the forces they exert on each other are equal in magnitude and opposite in direction.
Topics that use Newton's third law
- Moments, levers and gears (physics only) (AQA GCSE)
- Newton's laws (OCR GCSE)
- Uses of magnetism (OCR GCSE)
Related terms
- Equilibrium
- Interaction Pair
- normal contact force
- Applying and rearranging equations
- balanced beam
- balanced forces
- changing direction
- Circular motion
Using Newton's third law in the exam
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