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Консультация № 198925
17.06.2020, 18:50
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Здравствуйте! Прошу помощи в следующем вопросе по теоретической механике
Груз D массой m, получив в точке A начальную скорость
движется по изогнутой трубе ABC, расположенной в вертикальной
плоскости.
На участке AB трубы на груз, кроме силы тяжести, действуют
постоянная сила Q 10 Н, направленная от точки А к точке В, и
сила сопротивления R, зависящая от скорости V груза D:
n R V .
В точке B груз, изменив направление приобретенной скорости,
но, сохранив при этом ее величину, переходит на участок BC
трубы, где на него, помимо силы тяжести, действует сила трения
скольжения (коэффициент трения груза о трубу f=0,2) и
переменная по величине сила F=F(t), направленная вдоль участка
BC. Проекция Fx последней силы на ось Bx задается.
Считая груз D материальной точкой, и зная расстояние AB или
время t, движения груза от точки A до точки B, найти уравнение
x=x(t) движения груза на участке BC.
данные: m=3 кг, V0=4м/c, м= 0.1 Hc/м, n=2, F= t^2+2sin^2(t), l=8м, a=90 градусов
Груз D массой m, получив в точке A начальную скорость
движется по изогнутой трубе ABC, расположенной в вертикальной
плоскости.
На участке AB трубы на груз, кроме силы тяжести, действуют
постоянная сила Q 10 Н, направленная от точки А к точке В, и
сила сопротивления R, зависящая от скорости V груза D:
n R V .
В точке B груз, изменив направление приобретенной скорости,
но, сохранив при этом ее величину, переходит на участок BC
трубы, где на него, помимо силы тяжести, действует сила трения
скольжения (коэффициент трения груза о трубу f=0,2) и
переменная по величине сила F=F(t), направленная вдоль участка
BC. Проекция Fx последней силы на ось Bx задается.
Считая груз D материальной точкой, и зная расстояние AB или
время t, движения груза от точки A до точки B, найти уравнение
x=x(t) движения груза на участке BC.
данные: m=3 кг, V0=4м/c, м= 0.1 Hc/м, n=2, F= t^2+2sin^2(t), l=8м, a=90 градусов
Обсуждение
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