, or moment of force
(see the terminology below) is the tendency of a force
to rotate an object about an axis, fulcrum
, or pivot. Just as a force is a push or a pull, a torque can be thought of as a twist to an object. Mathematically, torque is defined as the cross product
of the position vector of the point where the force is applied (distance vector
) and the force vector, which tends to produce rotation.