1. Существует формула ν=n/t, где ν - частота, n - кол-во колебаний, а t - время колебаний. Переведём 9.5 мин в секунды и получим 570 сек. Подставим в формулу: ν=40/570≈0.07 Гц. ответ: 0.07 Гц
2. Для решения данной задачи нам потребуется формула T=2π
, где T - период колебаний, π - число пи, ≈ равное 3,14, ℓ - длинна маятника, равная 0.35м=35см и g - ускорение свободного падения, равное 9,8 м/с(Н/кг).
T=2π
=4
ℓ/g
T=
T≈
T≈11,86
ответ: 11,86 сек
3. Период колебаний(Т) равен 1 сек;
частота колебаний(ν) равна 1 Гц (по формуле ν=1/Т и др.);
амплитуда колебаний(А) равна 0.05 м=5 см.
ответ: 1 сек; 1 Гц; 5см
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Объяснение:
3кг : 0.002м^3= 1500кг/м^3