July 2022 1 32 Report
Ящик массой 174 кг тянут по полу равномерно за веревку, образующую угол 30 градусов к горизонту. Коэфицент трения ящика о пол равен 0,25. Сила которой тянут ящик, равна (cos 30градусов=0,87;sin30градусов= 0,5;g=10м/с^2)
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