What equilibrium means
What equilibrium means
An object is in equilibrium when it has no resultant force and no resultant moment. That means it has no linear acceleration and no angular acceleration, so it will not start moving or start rotating.
Step-by-step lessons on OCR A A Level Physics Equilibrium. Each one builds up to exam-style questions. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks across the three papers require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.