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Консультация № 201335
12.08.2021, 16:42
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Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос:
На гладкой горизонтальной поверхности стола удерживают доску массой 2m, на которую помещён груз вдвое меньшей массы. Коэффициент трения между доской и этим грузом равен 0,5. С помощью лёгкой нерастяжимой нити, перекинутой через лёгкий блок, вращающийся без трения, к доске прикреплён груз массой 2m (см. рисунок). Систему отпускают, и она приходит в движение. При этом величина силы трения между доской и грузом равна 6 Н. Тела возвращают в исходное положение, меняют груз 2m на конце нити на другой, массой 4m, и снова отпускают доску. Какой теперь будет сила трения между доской и грузом в ходе начавшегося движения? Ответ дайте в Н, округлив до десятых
.
На гладкой горизонтальной поверхности стола удерживают доску массой 2m, на которую помещён груз вдвое меньшей массы. Коэффициент трения между доской и этим грузом равен 0,5. С помощью лёгкой нерастяжимой нити, перекинутой через лёгкий блок, вращающийся без трения, к доске прикреплён груз массой 2m (см. рисунок). Систему отпускают, и она приходит в движение. При этом величина силы трения между доской и грузом равна 6 Н. Тела возвращают в исходное положение, меняют груз 2m на конце нити на другой, массой 4m, и снова отпускают доску. Какой теперь будет сила трения между доской и грузом в ходе начавшегося движения? Ответ дайте в Н, округлив до десятых
Обсуждение
14.08.2021, 09:44
общий
Адресаты:
Очередь дошла до Вашей задачи. Однако, Ваше давнее "Последнее посещение ~1,5 сут. назад" вызывает подозрение, будто Вы забросили свою консультацию и ушли молча (так делают примерно половина просителей-разгильдяев).
Эксперты не успевают помочь всем и быстро.
Подтвердите своё ожидание помощи, если Вы ещё нуждаетесь в ней.
Эксперты не успевают помочь всем и быстро.
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