So it is bMg divided by the moment of inertia about that point P.
也就是bMg除以,点P的转动惯量。
What is the moment of inertia for rotation of a rod about this axis?
关于这个轴的,旋转动动量是多少？
Conservation of angular momentum, moment of inertia, parallel axis theorem.
角动量守恒，惯量，平行轴原理。
OK, so moment of inertia about the z axis so, what's the distance to the z axis?
关于绕z轴的转动惯量,到z轴的距离是多少？
For the moment of inertia, we want the square of a distance to the axis of rotation.
至于转动惯量，要求的其实是到旋转轴距离的平方。
Needless to say, that the moment of inertia depends on what kind of object you have.
不用说，转动惯量取决于，你选择的物体。
How hard it is to spin something, on the other hand, is given by its moment of inertia.
旋转东西有多难，换着来讲的话，是跟转动惯量有关的。
But it's completely different, the moment of inertia, if you rotated it about this axis.
但它完全不同，转动惯量，如果将其绕这轴旋转。
If I know the moment of inertia, then I know how much rotational kinetic energy there is.
若知道转动惯量我就能知道，转动动能是多少。
Triangulates weight at the corners of the putter for an extremely high moment of inertia.
把重量分成三份，并分布在打推杆的不同角落，成功取得极高的惯性力矩。
It has to do, of course, with the moment of inertia, but again, it's independent of mass, radius and length.
肯定是，与时间惯量有关，再次，它与材料无关，还有半径和长度无关。
In this paper, the axes of maximum and minimum moment of inertia is proved to be mutually perpendicular.
本文给出了最大转动惯量轴与最小转动惯量轴相互垂直的证明。
In rotation, force becomes torque, mass becomes moment of inertia, and acceleration becomes angular acceleration.
在旋转时，力变成力矩，质量变成转动惯量，加速度变成角加速度。
I will ask you for a moment of inertia for some weird line or something like that. OK, but these you should know.
我会让你们求一些，比较奇怪的曲线的转动惯量，这些你们都应该知道。
We have the mass of the sun, we have the radius of the sun so you can calculate the moment of inertia of the sun.
我们知道太阳的质量，太阳的半径,所以可以计算出,太阳的惯性是多少。
By optimum design of flywheel sets on the given moment of inertia, experiment desk can simulate varied vehicle.
在一定范围转动惯量下对飞轮组的优化设计，最终使试验台有效地模拟不同转动惯量的汽车。
For example, the moment of inertia about the z-axis is dV the triple integral of x squared plus y squared density dV.
例如，关于z轴的转动惯量,是∫∫∫δ
I mean, there are some spokes here, but let's assume that everything is here, so then the moment of inertia is MR squared.
我是说，有一些偏差，但是假设每件事都在这，所以时间惯量是MR的平方。
Torque divided by moment of inertia is what will cause the angular acceleration, namely the derivative of angular velocity.
扭矩除以转动惯量,就会引起角加速度，也就是角速度的导数。
And so I know now I can substitute that in there rMg so I get an omega precession now equals rMg times the moment of inertia.
我知道我可以替换,得到ω等于,乘以时间惯量。
So we now have a way of calculating the kinetic energy of rotation provided that we know how to calculate the moment of inertia.
现在我们有一个计算，旋转动能的方法，如果我们知道，怎样计算转动惯量。
The platform can analog rolling and swaying motion of ships. the moment of inertia, damping and restoring force can be adjusted.
该试验台架能够模拟船舶的横摇运动和横荡运动， 试验台架的转动惯量、阻尼力矩和恢复力矩可调。
The exciter current an exponential relationship with transmitted torque, torque by unit moment of inertia and viscous power loss.
励磁电流与传递力矩、单位转动惯量传递的力矩等成指数关系，与功率损耗成负指数关系。
The properties of these one centimetre sections are called unit properties, that is unit section modulus and unit moment of inertia.
一个厘米截面的特性称为单位特性，即单位截面模量和单位截面惯性矩。
The pan driving motor assembled on the foundation. Thus this can reduce tilt's moment of inertia and increase the platform's agility.
该平台结构相对紧凑、运动范围广；左右旋转电机固定在底座上，减少了俯仰转动惯量，提高了平台的灵活性。
A method for measurement of area and moment of inertia of plane figures grabbed by computer vision system is presented in this paper.
探讨利用计算机视觉系统对目标物体平面图形面积和面积惯性矩的测量方法。
If we have a solid cylinder, then the moment of inertia about this axis Q through the center of mass, which I've called Q, equals 1/2 MR squared.
假如有一个实心圆柱体，轴心的时间惯量,通过这个物质的中心，等于1/2，MR的平方。
It is demonstrated that the influence of fluid resistance can not be neglected and the effect of moment of inertia of plate may be cancelled.
证明了流体阻力的影响是不可忽略的，而圆板转动惯量的影响是较小的。
It is demonstrated that the influence of fluid resistance can not be neglected and the effect of moment of inertia of plate may be cancelled.
证明了流体阻力的影响是不可忽略的，而圆板转动惯量的影响是较小的。
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