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Консультация № 191341
12.09.2017, 19:21
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12.09.2017, 22:05
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Уважаемые эксперты! Пожалуйста, ответьте на вопрос:
Шайба скользит по гладкой поверхности. Подлетая к небольшой пологой горке, шайба имеет скорость 8 м/с. Если между шайбой и поверхностью отсутствует трение, то шайба сможет преодолеть подъём высотой ...
Шайба скользит по гладкой поверхности. Подлетая к небольшой пологой горке, шайба имеет скорость 8 м/с. Если между шайбой и поверхностью отсутствует трение, то шайба сможет преодолеть подъём высотой ...
Обсуждение
12.09.2017, 19:23
общий
шайба скользит по гладкой поверхности. Подлетая к небольшой пологой горке шайба имеет скорость 8 м/с. Если между шайбой и поверхностью отсутствует трение , то шайба сможет преодолеть подьем высотой
12.09.2017, 22:20
общий
это ответ
Здравствуйте, KiryFizik!
У подножия пологой горки шайба массой
имеющая скорость 
обладает кинетической энергией, равной 
и (примем так) нулевой потенциальной энергией. На вершине горки кинетическая энергия шайбы становится нулевой, а потенциальная - равной 
где 
- высота горки. В силу закона сохранения механической энергии,
(м).
У подножия пологой горки шайба массой
имеющая скорость обладает кинетической энергией, равной и (примем так) нулевой потенциальной энергией. На вершине горки кинетическая энергия шайбы становится нулевой, а потенциальная - равной где - высота горки. В силу закона сохранения механической энергии, (м).
Об авторе:
Facta loquuntur.
Facta loquuntur.
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