Torque Torque Torque, moment, or moment of force is the rotational equivalent of linear force. The concept originated with the studies of Archimedes on the usage of levers. Just as a linear force is a push or a pull, a torque can be thought of as a twist to an object. The symbol for torque is typically formula_1, the lowercase Greek letter "tau". When being referred to as moment of force, it is commonly denoted by "M". In three dimensions, the torque is a pseudovector; for point particles, it is given by the cross product of the position vector (distance vector)
Torque the definition used in US physics in its usage of the word "torque". In the UK and in US mechanical engineering, torque is referred to as "moment of force", usually shortened to "moment". In US physics and UK physics terminology these terms are interchangeable, unlike in US mechanical engineering, where the term "torque" is used for the closely related "resultant moment of a couple". "Torque" is defined mathematically as the rate of change of angular momentum of an object. The definition of torque states that one or both of the angular velocity or the moment of inertia of an object