What is required to maintain a state of equilibrium?

To maintain a state of equilibrium, specifically in a rotational context, it is essential that the sum of clockwise torques equals the sum of anti-clockwise torques. This condition ensures that there is no net torque acting on the object, allowing it to remain in a stable position without rotating.

When the torques are balanced, the object experiences no rotational acceleration, thus keeping its current state of motion—either at rest or moving uniformly. This principle applies not only to static situations, where an object is at rest, but also to dynamic scenarios where an object is moving at a constant angular velocity.

In contrast, if there were more anti-clockwise torques than clockwise, the object would start to rotate in the anti-clockwise direction. Likewise, if the forces are unbalanced, it would lead to linear acceleration not equilibrium. A constant external force alone does not contribute to rotational balance, as it affects the linear motion of the entire system rather than the rotational aspects necessary for equilibrium.