Задача №10.5

Условие

Мостовой кран движется вдоль мастерской согласно уравнению x=t; по крану катится в поперечном направлении тележка согласно уравнению y=1,5t (x и y — в метрах, t — в секундах). Цепь укорачивается со скоростью v=0,5 м/с. Определить траекторию центра тяжести груза; в начальном положении центр тяжести груза находился в горизонтальной плоскости Oxy; ось Oz направлена вертикально вверх.

Решение




Предыдущая задача №4
По заданным уравнениям движения точки найти уравнение ее траектории, а также указать закон движения точки по траектории, отсчитывая расстояние от начального положения точки.
1) x = 3t2, y = 4t2.
2) x = 3 sin t, y = 3 cos t.
3) x = a cos2 t, y = a sin2 t.
4) x = 5 cos 5t2, y = 5 sin 5t2.
Следующая 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.
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
2.7
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2.10
2.11
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3.1
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3.3
3.4
3.5
3.6
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4.1
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5.1
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6.1
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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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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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27.6
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27.55
27.58
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27.62
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27.65
28.1
28.2
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28.6
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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
33.2
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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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56.3
56.7
56.9
ПравообладателямПользовательское соглашениеПолитика конфиденциальности • Контакты: e-mail: helplearn@yandex.ru