Interaction Pair
What Interaction Pair means in Physics GCSE, as defined for AQA, OCR.
Definitions of Interaction Pair
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
Check what you remember
Read the wording for your board, then hide it and explain Interaction Pair in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A pair of forces that are equal in size, opposite in direction, of the same type, and act on two different interacting objects.
The pair of forces that arise from the interaction between two objects, as described by Newton's Third Law.
Topics that use Interaction Pair
- Moments, levers and gears (physics only) (AQA GCSE)
- Newton's laws (OCR GCSE)
Related terms
- Equilibrium
- Newton's third law
- normal contact force
- balanced beam
- balanced forces
- changing direction
- Circular motion
- constant velocity
Using Interaction Pair in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Physics questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge