unknown force
What unknown force means in Physics GCSE, as defined for AQA.
Definition of unknown force
Check what you remember
Read the wording for your board, then hide it and explain unknown force in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
The force found by rearranging the moment equation when the other three quantities are known.
Topics that use unknown force
- Moments, levers and gears (physics only) (AQA GCSE)
Related terms
- balanced beam
- Equilibrium
- gears
- Interaction Pair
- Newton's third law
- normal contact force
- pivot
- principle of moments
Using unknown force 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