Автомобиль массой 2т движется со скоростью 54км/ч по выпуклому мосту .радиус кривизны которого 90м. с какой силой давит автомобиль на мост в верхней точке?
sasapanskov
3
02.09.2019 23:00
3
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3
a=V^2/R
F=2000*(9,8-15^2/90)=14600 H