扭矩

扭矩、力矩或力的矩（见下面的术语），是一种力使物体绕轴、支点或枢轴旋转的倾向。[1]就像力是一种推或拉，扭矩可以被认为是对物体的一种扭转。从数学上讲，扭矩被定义为力臂距离和力的叉积，它倾向于产生旋转。宽泛地说，扭矩是一种对物体（如螺栓或飞轮）的转动力的度量。例如，推或拉连接到螺母或螺栓的扳手的手柄会产生一个扭矩（转动力），使螺母或螺栓松开或拧紧。

Torque, moment or moment of force (see the terminology below), is the tendency of a force to rotate an object about an axis,[1] 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 lever-arm distance and force, which tends to produce rotation. Loosely speaking, torque is a measure of the turning force on an object such as a bolt or a flywheel. For example, pushing or pulling the handle of a wrench connected to a nut or bolt produces a torque (turning force) that loosens or tightens the nut or bolt.