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Консультация № 201249
30.06.2021, 11:57
0.00 руб.
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2
1
Уважаемые эксперты! Пожалуйста, ответьте на вопрос:Два тягача тянут груз массой 2 т по горизонтальной поверхности так, что он двигается по прямой. Трос первого тягача натянут с силой 8 кН, трос второго — с силой 6 кН, и тросы перпендикулярны друг другу. На груз со стороны поверхности действует сила трения величиной 8 кН. Найдите ускорение груза. Ответ выразите в м/с2, округлив до десятых.
Обсуждение
30.06.2021, 15:03
общий
это ответ
Здравствуйте, kuznetsova.79!
Предлагаю Вам следующее решение задачи.
Дано:
т -- масса груза; 
кН -- сила натяжения троса первого тягача; 
кН -- сила натяжения троса второго тягача; 
кН -- сила трения.
Определить:
-- ускорение груза и его модуль.
Груз движется в направлении, которое определяется равнодействующей
то есть по гипотенузе векторного треугольника, катетами которого являются векторы 
и 
причём начало второго вектора совпадает с концом первого. Модуль этой равнодействующей составляет
(кН).
Сила трения направлена противоположно указанной равнодействующей и вместе с ней составляет результирующую силу
модуль которой равен
(кН).
Тогда модуль ускорения груза составляет
(м/с2).
Ответ:
м/с2.
Предлагаю Вам следующее решение задачи.
Дано:
т -- масса груза; кН -- сила натяжения троса первого тягача; кН -- сила натяжения троса второго тягача; кН -- сила трения.Определить:
-- ускорение груза и его модуль.Решение
Груз движется в направлении, которое определяется равнодействующей
то есть по гипотенузе векторного треугольника, катетами которого являются векторы и причём начало второго вектора совпадает с концом первого. Модуль этой равнодействующей составляет (кН).Сила трения направлена противоположно указанной равнодействующей и вместе с ней составляет результирующую силу
модуль которой равен (кН).Тогда модуль ускорения груза составляет
(м/с2).Ответ:
м/с2.
5
Об авторе:
Facta loquuntur.
Facta loquuntur.
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