If the object is in equilibrium, the sum of all the forces acting on the object is zero. Inertia Force Mechanical Equilibrium Equilibrium rule   A push or a pull on an object. Inertia Force Mechanical Equilibrium Equilibrium rule   The tendency of objects to resist changes in motion. Inertia Force Mechanical Equilibrium Equilibrium rule … Continue reading CBSE Physics MCQ for quick revision – Mechanics