На квадратное сиденье табуретки с площадью опоры 16 дм2 поставили ящик шириной 4 дм и длиной 1 м.вес ящика равен 800 н.какое давление он оказывает на табуретку?

Дано    f=800 н      s=0,16 м2    p-? размеры ящика больше размеров табуретки значит зависит давление от площади табуретки, так как часть ящика нависает над ней p = f/s=800/16*0,01=5000 па

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