Задача №37.38

Условие

Круглый цилиндр массы M, длины 2l и радиуса r=l/6 качается около оси O, перпендикулярной плоскости рисунка. Как изменится период качаний цилиндра, если прикрепить к нему на расстоянии OK=85l/72 точечную массу m?

Решение




Предыдущая задача №37
На каком расстоянии от оси подвеса должен быть присоединен к физическому маятнику добавочный груз, чтобы период качаний маятника не изменился?
Следующая задача №39
Найти уравнение малых колебаний однородного диска массы M и радиуса r, совершающего колебания вокруг горизонтальной оси Oz, перпендикулярной его плоскости и отстоящей от центра масс C диска на расстоянии OC=r/2. К диску приложен вращающий момент mвр, причем mврz=m0sinpt, где m0 и p — постоянные. В начальный момент диску, находившемуся в нижнем положении, была сообщена угловая скорость ω0. Силами сопротивления пренебречь. Считая колебания малыми, принять sinφ≈φ.
Источник: Решебник Мещерского 12 класс
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1.1
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46.1
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49.1
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