Сила нормального общества
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![[Сергей Петровских] Лабораторная работа «Исследование зависимости силы трения скольжения от силы нормального давления»](https://sun9-66.userapi.com/impg/47NX4_qdtjy_8F9LlTt34PbJAeanl7ezR6L_HQ/8uY-yISbYXY.jpg?size=320x240&quality=95&keep_aspect_ratio=1&background=000000&sign=74a252007fd1006c5e69e3623b369708&c_uniq_tag=2Y_T-3fdE-lTe-4o6I5_PPBC99kb8sYxwtTx_SWZF-s&type=video_thumb)
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