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29. В вагоне, движущемся горизонтально с ускорением а = 2 м/с2, висит на шнуре груз массы m = 200 г. Найти силу напряжения шнура и угол отклонения шнура от вертикали (рис.5).
29. В вагоне, движущемся горизонтально с ускорением а
