Define 'static equilibrium' in engineering terms.

In engineering, 'static equilibrium' refers to a condition where an object is at rest or moving with a constant velocity, resulting in no net force or net moment acting upon it. This means that all forces acting on the body are balanced, and the sum of these forces plus the sum of moments (torque) around any point is zero. In this state, the object remains stationary or in uniform motion, ensuring stability and safety in structures and mechanical systems.

This definition is fundamental to understanding how structures support loads, as engineers must ensure that the forces acting on them do not cause movement or instability. In static equilibrium, the body does not experience any acceleration, which is crucial for maintaining the integrity of engineering designs.

The other options describe states that do not align with the principles of static equilibrium. For instance, balanced forces resulting in movement contradict the very essence of equilibrium, as such movement implies that there is a net force acting. Similarly, dynamic motion suggests that forces are in play, contrary to the conditions of static equilibrium where no net forces are present. Lastly, higher energy consumption in a system does not pertain to static equilibrium, as this concept deals with forces and moments rather than energy expenditure or dynamics.