In mechanics, a moment is a measure of the turning effect of a force about some point in space. In most practical examples, moments are the results of forces acting at a distance from the point of interest. The stress on the body on which the force acts is then symmetric. If the moment results from a strong body force, such as that produced in a magnetic material in a strong magnetic field, the stress tensor is non-symmetric. Mechanics is the branch of physics concerned with the motion of physical bodies, the forces that cause or limit these motions, and the forces to which bodies may, in turn, give rise. ... Moment refers to either of two related concepts in mathematics and physics: Moment (physics) Moment (mathematics) See also Moment (magazine), a Jewish general publication. ... In physics, a force is anything that causes a free body with mass to accelerate. ... In physics, a force is anything that causes a free body with mass to accelerate. ... Stress has different meanings in different fields: Look up stress in Wiktionary, the free dictionary. ...