Torque Calculation
力矩计算
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In the diagram, the angle is the angle <= 180 degrees between the r and F vectors when they are drawn from the same origin. The direction of the torque is given be the right hand rule, which gives a vector out toward the reader in this case. Note that the torque is maximum when the angle is 90 degrees.
在图中，角度是当r和F矢量从同一点出发时所形成的小于180度的角。力矩的方向由右手法则确定，本例中力矩矢量指向读者。注意当角度为90度时，力矩最大。 |
A practical way to calculate the magnitude of the torque is to first determine the lever arm and then multiply it times the applied force. The lever arm is the perpendicular distance from the axis of rotation to the line of action of the force.
计算力矩大小的一种实用方法是首先确定力臂，然后将其乘以作用力。力臂是从旋转轴到力作用线的垂直距离。
The direction of the torque associated with the illustration above is toward you. That is, it is along the rotation axis in the direction out of the screen.
| Torque as a vector product
力矩作为矢量积 |
若在距离旋转轴 r = m 处施加一个大小为 F = N 的力，且该力的作用线与力的方向成 θ = 度角，则力臂为 m，力矩的大小为 τ = N·m。上述示意图中力矩的方向是朝向你，即沿着旋转轴方向，指向屏幕外。
中文译文中的待填/计算数值依次对应：1：f 2：r 3：th 4：la 5：tor。实际数值以上方原输入框为准。
Rotation concepts
Torque concepts
索引 旋转概念 力矩概念
| HyperPhysics***** Mechanics ***** Rotation
HyperPhysics ***** 力学 ***** 转动 | R Nave |
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