Equilibrium
Physics: AQA GCSE Higher, topic 5.3.15
Equilibrium
For an object to be in equilibrium:

In linear motion
- There must be no resultant force acting on the object.
- It must be stationary or travelling at a constant speed in a straight line.

In circular motion
- The sum of the clockwise moments must be equal to the sum of the anti-clockwise moments acting on the object.
- This means that the object is not rotating or rotates at a constant speed.
Test yourself on Equilibrium
Which of these is a necessary condition for equilibrium?
Which of the following are true of an object in equilibrium?