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单词 normal force
例句
原声例句
可汗学院:物理

So you have this counteracting normal force.

这个力,也就是平行於斜面的这个地心引力的分力。

可汗学院:物理

And this is the normal force.

这个力,也就是平行於斜面的这个地心引力的分力。

可汗学院:物理

So this is the normal force.

所以这是支持力。

可汗学院:物理

So the normal force that I have to apply is 12.25 times the mass.

的支持力是12.25乘以质量所以这是我施加的力 乘以质量。

可汗学院:物理

So you have the normal force is equal to 9.8 times the mass divided by 0.8.

所以支持力等於9.8乘以质量9.8除以0.8等於12.25 所以我施加。

可汗学院:物理

We're sitting on the ground in the vertical direction, normal force counteracting the force of gravity.

现在考虑更多的例子。

可汗学院:物理

So the ground is providing an upwards force or normal force in this situation.

现在考虑更多的例子。

可汗学院:物理

The ground is providing a normal force, I'll do it in green.

现在考虑更多的例子。

可汗学院:物理

And I have the normal force. The rock is being supported by the ground 5 N upwards.

现在考虑更多的例子。

可汗学院:物理

5 N normal force of the ground supporting the rock.

现在考虑更多的例子。

可汗学院:物理

Similarly, the normal force is an external force but it's exactly cancelled by the gravitational force.

同样, 法向力是一种外力,但它恰好被引力抵消了。

可汗学院:物理

And there's still a normal force , the ground supporting the rock of 5 N upwards.

现在考虑更多的例子。

可汗学院:物理

People think that the normal force is always mg, we saw that that's not true.

人们认为法向力总是 mg,我们看到事实并非如此。

可汗学院:物理

It's only the normal force on this five kilogram mass that's contributing to this force of friction here.

只有作用在这个 5 千克重物上的法向力才对此处的摩擦力产生影响。

可汗学院:物理

The force of gravity is being balanced by the normal force of the ground.

现在考虑更多的例子。

可汗学院:物理

I should say the magnitude of the normal force.

这可以通过实验来求。

可汗学院:物理

People also think the normal force is always up, but it's not.

人们还认为法向力总是向上,但事实并非如此。

可汗学院:物理

We will not draw the normal force up.

我们不会绘制法向力。

Crash Course Physics 速成课物理

But if you put it on a ramp, then the normal force is pointing perpendicular to the ramp.

但是如果我们把它放在斜坡上,那么力 自然倾向于垂直于斜坡。

可汗学院:物理

It just so happens that this horizontal force depends on a vertical force, which is the normal force.

碰巧这个水平力取决于垂直力,这是法向力。

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