Задача №10.7

Условие

При соответствующем выборе осей координат уравнения движения электрона в постоянном магнитном поле определяются равенствами x=asinkt, у=acoskt, z=vt, где a, k и v — некоторые постоянные, зависящие от напряженности магнитного поля, массы, заряда и скорости электрона. Определить траекторию электрона и закон движения его по траектории.

Решение




Предыдущая задача №6
Движение точки, описывающей фигуру Лиссажу, задается уравнениями x=3sint, y=2cos2t (t — в секундах). Найти уравнение траектории, вычертить ее и указать направление движения точки в различные моменты времени. Указать также ближайший после начала движения момент времени t1, когда траектория пересечет ось Ox.
Следующая задача №8
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).
Источник: Решебник Мещерского 12 класс
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1.1
1.2
1.3
1.4
1.5
2.1
2.2
2.3
2.4
2.5
2.6
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3.1
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3.4
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3.6
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4.1
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5.1
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6.1
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7.1
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8.1
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9.1
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10.1
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11.1
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12.1
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13.1
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14.1
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15.1
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16.1
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17.1
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18.1
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19.1
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20.1
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21.2
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22.1
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23.1
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24.1
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25.1
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26.1
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27.1
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27.55
27.58
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27.65
28.1
28.2
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29.1
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30.1
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31.1
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31.35
32.1
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32.107
33.1
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34.1
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35.1
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36.1
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37.1
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38.1
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39.1
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40.1
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41.1
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42.1
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43.1
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44.1
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45.3
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46.1
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47.1
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48.1
48.5
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49.1
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53.5
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54.1
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55.2
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55.9
55.10
55.11
55.12
55.13
55.14
55.15
55.16
55.21
55.25
55.38
55.41
55.44
56.3
56.7
56.9
ПравообладателямПользовательское соглашениеПолитика конфиденциальности • Контакты: e-mail: helplearn@yandex.ru