Equilibrium is a state where an object experiences no net change in its motion. This means its velocity (both magnitude and direction) is constant. The conditions for an object to be in equilibrium are: • The net force acting on the object must be zero. This ensures translational equilibrium, meaning the object is either at rest or moving with constant velocity. $$ \sum \vec{F} = 0 $$ • The net torque acting on the object must be zero. This ensures rotational equilibrium, meaning the object is either not rotating or rotating at a constant angular velocity. $$ \sum \vec{\tau} = 0 $$ 3 done, 2 left today. You're making progress.