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。

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.

youdao

增加倾斜度直到物体开始下滑,然后记住开始下滑时的角度值,通过公式就能求出,静摩擦系数μ静。

We will do that later until it starts to slip and then at that critical angle that it starts to slip you have a value for mu of s for the static friction coefficient.

youdao