Задача №46.17

Условие

Кривошипно-ползунный механизм OAB связан в середине шатуна AB цилиндрическим шарниром C со стержнем CD. Стержни CD и DE соединены цилиндрическим шарниром D. Определить зависимость между модулями сил FA и FD, соответственно перпендикулярных стержням OA и DE, при равновесии механизма в положении, указанном на рисунке. Дано: ∠DCB=150°, ∠CDE=90°.

Решение




Предыдущая задача №16
В механизме антипараллелограмма ABCD звенья AB, CD и BC соединены цилиндрическими шарнирами B и C, а цилиндрическими шарнирами A и D прикреплены к стойке AD. К звену CD в шарнире C приложена горизонтальная сила FC. Определить модуль силы FB, приложенной в шарнире B перпендикулярно звену AB, если механизм находится в равновесии в положении, указанном на рисунке. Дано: AD=BC, AB=CD, ∠ABC=∠ADC=90°, ∠DCB=30°.
Следующая задача №18
Колодочно-бандажный тормоз вагона трамвая состоит из трех тяг AB, BC и CD, соединенных шарнирами B и C. При действии горизонтальной силы F тормозные колодки K и L, соответственно прикрепленные к тягам AB и CD, прижимаются к колесу. Определить силы давления NK и NL колодок на колесо. Размеры указаны на рисунке. Вагон находится в покое.
Источник: Решебник Мещерского 12 класс
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1.1
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24.1
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32.1
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46.1
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47.1
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55.13
55.14
55.15
55.16
55.21
55.25
55.38
55.41
55.44
56.3
56.7
56.9
ПравообладателямПользовательское соглашениеПолитика конфиденциальности • Контакты: e-mail: helplearn@yandex.ru