If we talk generally, there are majorly two factors which it depends on.
But, materials polished quite smoothly with their surfaces cleaned carefully like plates of glass can stick to each other in a strong manner. For example, two rough surfaces like sandpaper when rubbed against each other may have more friction. In other words, for every general rule about friction, you will find just as many exceptions. However, the complexity of the interactions makes it hard to characterize the force of friction in different situations because it needs experiments which we cannot possibly derive from merely equations or laws. Scientists say that it is the result of the electromagnetic attraction between charged particles in two touching surfaces.Īctually, the law which governs it started to form in the 1400s by scientists.
As we discussed before, friction is unlike gravity and electromagnetism which are fundamental forces.
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