Torque, moment, or moment of force (see "Defining Terminology" below) is rotational
Loosely speaking, torque is a measure of the turning force on an object such as a bolt or a
The magnitude of torque depends on three quantities: the force applied, the length of the lever arm  connecting the axis to the point of force application, and the angle between the force vector and the lever arm. In symbols:
Torque is referred to using different vocabulary depending on geographical location and field of study. This article refers to the definition used in US physics in its usage of the word torque.
 In the UK and in US
Torque is defined mathematically as the rate of change of
This article follows the US physics terminology by calling all moments by the term torque, whether or not they cause the angular momentum of an object to change.