Physics for IGCSE & O level - Forces And Pressure (Section 6 - No. 12)
What conditions must be met for an object to be in static equilibrium?
The sum of all forces acting on the object is zero.
The sum of all moments acting on the object is zero.
The object is moving at a constant speed.
The object is accelerating.
Forklaring
Static equilibrium requires balanced forces and moments and being at rest.