What is the term for a force causing rotation of a structural member around a fixed point of connection?

The correct term for a force causing rotation of a structural member around a fixed connection point is "moment." In structural engineering and mechanics, a moment is defined as the tendency of a force to cause an object to rotate around a particular point. This is often calculated as the product of the force and the distance from the point of rotation to the line of action of the force.

Understanding this concept is crucial, as moments can significantly impact the design and stability of structures. They determine how forces create rotational effects, which can lead to bending, twisting, or even failure if not appropriately managed in construction. The terms "load," "torque," and "force" are related but don't specifically capture the concept of rotational impact associated with a point of connection in the same precise way that "moment" does.