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Консультация № 201396
12.09.2021, 20:50
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Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос:
На горизонтальной поверхности лежит расправленный вдоль прямой линии тонкий однородный канат массой m. Один из его концов тянут (в направлении «от каната») с силой F=mg (здесь g — ускорение свободного падения). Линия действия этой силы и канат находятся в одной вертикальной плоскости. Найти максимальное значение угла 0??<90? между линией действия силы и поверхностью, при котором канат не будет скользить по поверхности. Считайте, что коэффициент трения между канатом и поверхностью ?=4/3 не зависит от того, какая часть каната соприкасается со столом. Ответ выразите в градусах, округлив до целого числа.
Заранее большое спасибо за помощь!!
На горизонтальной поверхности лежит расправленный вдоль прямой линии тонкий однородный канат массой m. Один из его концов тянут (в направлении «от каната») с силой F=mg (здесь g — ускорение свободного падения). Линия действия этой силы и канат находятся в одной вертикальной плоскости. Найти максимальное значение угла 0??<90? между линией действия силы и поверхностью, при котором канат не будет скользить по поверхности. Считайте, что коэффициент трения между канатом и поверхностью ?=4/3 не зависит от того, какая часть каната соприкасается со столом. Ответ выразите в градусах, округлив до целого числа.
Заранее большое спасибо за помощь!!
Обсуждение
13.09.2021, 18:52
общий
Адресаты:
Выполните, пожалуйста, рисунок к задаче и сообщите свои соображения по её решению. Тогда, возможно, среди экспертов раздела найдутся желающие посодействовать Вам. Хотя, скорее всего, желающих не будет, потому что задача имеет сложность явно выше средней. Но вдруг... 
Об авторе:
Facta loquuntur.
Facta loquuntur.
14.09.2021, 21:46
общий
Адресаты:
Интересно, из какого источника Вы взяли эту задачу и предыдущие, будучи не в состоянии сформулировать свои идеи по их решению. Соизмеряйте, пожалуйста, уровень заданий со своими возможностями и обращайтесь на портал только для получения консультации, а не готового решения. К сожалению, решать за Вас задачи теперь некому...
Об авторе:
Facta loquuntur.
Facta loquuntur.
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