静摩擦因数的测定需由实验测得，它与接触物体的材料和表面状况有关，如粗糙度、温度、湿度等，而与接触面大小无关。
设计了可进行静摩擦因数测定的实验装置。
In this paper, an experimental device for measuring the static coefficient of friction was designed.
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？
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?
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