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)
San (letter) an acute accent) or by ⟨σ̱⟩ (sigma with a macron underneath). Note, however, that the same symbol is used to denote the unrelated letter waw () in Pamphylia (the "Pamphylian digamma") and was also the form of beta () used in Melos. The Ionian letter , which later gave rise to the numeral symbol Sampi (ϡ = 900) may also be a continuation of San, although it did not have the same alphabetic position. In the Greek script used for writing the Bactrian language, there existed a letter resembling a ""þ"", which apparently stood for the sound (transliterated as "š")