Torque

力矩

A torque is an influence which tends to change the rotational motion of an object. One way to quantify a torque is

力矩是一种倾向于改变物体旋转运动的影响。量化力矩的一种方法是

Torque = Force applied x lever arm

力矩 = 力 x 力臂

The lever arm is defined as the perpendicular distance from the axis of rotation to the line of action of the force.

力臂被定义为从旋转轴到力的作用线的垂直距离。

Torque calculation

力矩计算

Torque expressions:

力矩表达式：

Trigonometric

三角函数

Vector Product

矢量积

Index

Rotation concepts

Torque concepts

索引旋转概念力矩概念

HyperPhysics***** Mechanics ***** Rotation

HyperPhysics ***** 力学 ***** 转动

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Conditions for Equilibrium

平衡条件

An object at equilibrium has no net influences to cause it to move, either in translation (linear motion) or rotation. The basic conditions for equilibrium are:

处于平衡状态的物体不会受到使它移动（平动或转动）的净力作用。平衡的的基本条件是：

The conditions for equilibrium are basic to the design of any load-bearing structure such as a bridge or a building since such structures must be able to maintain equilibrium under load. They are also important for the study of machines, since one must first establish equilibrium and then apply extra force or torque to produce the desired movement of the machine. The conditions of equilibrium are used to analyze the "simple machines" which are the building blocks for more complex machines.

力的平衡条件是任何承载结构（如桥梁或建筑）设计的基础，因为这类结构必须能够在受力下保持平衡。这些条件对于研究机器也非常重要，因为首先要建立平衡状态，然后才能施加额外的力或力矩以产生机器所需的运动。平衡条件用于分析‘简单机械’，它们是更复杂机械的构建块。

Index

索引

HyperPhysics***** Mechanics ***** Rotation

HyperPhysics ***** 力学 ***** 转动

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