The frictional force remains constant, dependent on the friction, the kinetic friction coefficient, is always the same...
摩擦力不守恒，它取决于摩擦力，动能摩擦系数，一直是相同的。
If, however, this object wants to go in this direction - which I do not know-- then the frictional force has to be put in this direction.
不过如果物体有下滑的趋势,我不知道-,那么摩擦力,就会向上。
Friction prevents it from doing so so there's going to be a frictional force in this direction.
摩擦力则阻碍下滑，因此存在，此方向的摩擦力。
So there is also a frictional force.
所以这个是摩擦力。
So I know what the frictional force is given by this result.
由此我得到，摩擦力的大小。
So now the situation is only safe as long as the frictional force is smaller or equal to the maximum value possible.
所以只有当,摩擦力,小于或等于最大值的,时候才不会倒。
This might be enough to counteract the frictional force that holds the slabs of rock in place, making it easier for faults to slip.
这足以抵消保持岩石不动产生的摩擦力，使得岩层轻易移动。
Now, I don't want this ladder to slide, so now I have a requirement that the frictional force must be less or equal to the maximum frictional force possible.
我不希望梯子滑下来，所以我要求，摩擦力必须小于，或者等于，摩擦力的可能最大值。
It is moving, so sure, it's going to be accelerated so the frictional force is in this direction, has this value.
物体运动，并向上加速度，因为摩擦力方向斜上，值为这个。
And that now must be the frictional force, because NP is still the frictional force.
这肯定是摩擦力，因为NP还是摩擦力。
And so that means that the frictional force is a maximum value possible, N which is the static friction coefficient times N, and therefore that is mu of s mgcos And when will that happen?
这意味着,摩擦力在最大值，静摩擦力因数乘以,等于mus乘以,θ，times，mg，times，the，cosine，of，theta。,什么时候会发生？
m2g Now, I know what T is, that is, m2 g + so m2 g equals m1 g sine alpha plus the maximum frictional force, which is this value.
而T又等于,因此m2g=m1gsinα,最大静摩擦力，也就是上面这个。
How does the frictional force do that?
摩擦力是怎么做的？
And as I increase the tilt this frictional force will get larger and larger and larger and then there comes a time that the object will start to slide.
随着倾斜度的变大，摩擦力，会越来越大，加到某一程度，物体会开始下滑。
So that means that N of P must be in magnitude the same as the frictional force.
这意味着PN必须,在大小上,与摩擦力相同。
And the frictional force, in this case will adjust itself just the right way so that Newton's Second Law in the x direction will give you, for the force, a zero.
其它情况下，摩擦力会根据情况调节自身,此时在x方向上使用第二定律,合力为0就是结果。
The frictional force between a particle and fluid counterbalances the weight of the particle.
颗粒与流体之间的摩擦力与其重量相平衡。
The test included anchoring force of prestressed anchor cable, frictional coefficients, stress of concrete and steel bar and structure deformation.
测试内容包括预应力锚索锚固力、摩阻系数、混凝土和钢筋应力以及结构变形。
An automatic detection device was developed to measure the frictional resistance force between the tracks on the brackets of car seats.
为了检测汽车座椅支架上下滑道的阻力，设计了滑道阻力的检测装置。
When calculation is made for tyre frictional force according to different braking and driving conditions, predicted result is obtained in very good conformation with the tested data.
对不同制动和驱动条件下轮胎摩擦力进行了计算，取得了同试验数据吻合很好的预测结果。
A discussion is made of the work done by static frictional force and the conservation of mechanical energy in the work doing process by way of typical cases.
本文就静摩擦力做功以及在静摩擦力做功过程中机械能守恒问题，结合实例做进一步讨论。
An analytic model including effects of frictional force at movable supports is suggested.
文中建议了考虑活动支座摩擦力影响的简支梁桥整体分析模型。
According to the poor influences of the cylinder frictional forces to the system control performances, the paper provided a new frictional force compensation method.
文章针对气缸摩擦力对系统控制性能造成的不良影响，提出了一种新的摩擦力补偿方法。
The value of frictional force of soil to pile body and resistance to pile toe has a close relation with the penetration depth and relative rigidity of soil layer at pile body and pile toe.
支承桩的桩身摩擦力和桩尖阻力的大小与入土深度及桩身、桩尖处土层的相对刚度密切相关。
The method of increasing frictional coefficient is properly used to predict the frictional force of designed path of later horizontal wells.
准确地估价摩阻力对水平井钻井与完井的设计和施工都有重要的指导作用。
Diagram 7 shows a pupil doing an investigation about frictional force. He pulls a box along a concrete surface.
图7显示一个学生在进行一项有关摩擦力的实验。他在水泥地面上拉动一个箱子。
The deformation and contact frictional force of elastomer pressure shear break are studied in proportion loading .
对比例加载时弹性体压剪裂缝的变形及接触摩擦力问题进行了研究。
Drive tension is caused by resistance of driving force and cutting resistance and frictional resistance and it is not the same value at different places.
锯链的驱动张力是驱动力与切削阻力及摩擦阻力相对抗而产生的，在不同位置其大小不等。
When the solid particle was in slipping or jumping motion state in slurry flow, the solid particle will be influenced by frictional force.
沉降性浆体中固体颗粒处于滑跳移运动状态时，固体颗粒将受到摩擦力的影响。
When the solid particle was in slipping or jumping motion state in slurry flow, the solid particle will be influenced by frictional force.
沉降性浆体中固体颗粒处于滑跳移运动状态时，固体颗粒将受到摩擦力的影响。
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