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Консультация № 189130
08.04.2016, 22:01
0.00 руб.
0
1
1
Здравствуйте! У меня возникли сложности с таким вопросом:
Цилиндр, изготовленный из стали, имеет площадь основания 10 см квадратных. Какую площадь основания должен иметь гранитный цилиндр такой же высоты, чтобы давление, оказываемое цилиндрами на стол, было одинаковым? Плотность гранита 2600 кг/м. куб.
Пожалуйста, дайте простое и подробное объяснение.
Цилиндр, изготовленный из стали, имеет площадь основания 10 см квадратных. Какую площадь основания должен иметь гранитный цилиндр такой же высоты, чтобы давление, оказываемое цилиндрами на стол, было одинаковым? Плотность гранита 2600 кг/м. куб.
Пожалуйста, дайте простое и подробное объяснение.
Обсуждение
08.04.2016, 22:31
общий
это ответ
Здравствуйте, svrvsvrv!
Интересный вопрос. На засыпку.
Давление, оказываемое основанием цилиндра на стол
p=mg/S=[$961$]Vg/S=[$961$]Shg/S=[$961$]hg,
где [$961$] - плотность материала, h - высота цилиндра, g - ускорение свободного падения.
Так что при той же высоте цилиндра давление зависит от плотности, но не зависит от площади основания. В общем, ни при какой площади основания давление не изменится.
Интересный вопрос. На засыпку.
Давление, оказываемое основанием цилиндра на стол
p=mg/S=[$961$]Vg/S=[$961$]Shg/S=[$961$]hg,
где [$961$] - плотность материала, h - высота цилиндра, g - ускорение свободного падения.
Так что при той же высоте цилиндра давление зависит от плотности, но не зависит от площади основания. В общем, ни при какой площади основания давление не изменится.
5
Большое спасибо! Очень доступное объяснение
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