Задача №10.8
Условие
Гармонические колебания точки определяются законом x=asin(kt+ε), где a>0 — амплитуда колебаний, k>0 — круговая частота колебаний и ε (-π≤ε≤π) — начальная фаза. Определить центр колебаний a0, амплитуду, круговую частоту, период T, частоту колебаний f в герцах и начальную фазу по следующим уравнениям движения (x — в сантиметрах, f — в секундах):1) x = -7 cos 12t.
2) x = 4 sin (πt/20) - 3 cos (πt/20).
3) x = 2 - 4 sin 140t.
4) x = 6 sin2 18t.
5) x = 1 - 4 cos2 (πt/60).
Решение
☆
Добавить в избранное
1.1
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2.1
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48.1
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49.1
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