Задача №2.38

Условие

К шарниру A стержневого шарнирного четырехугольника ABDC, сторона CD которого закреплена, приложена сила Q=100 Н под углом BAQ=45°. Определить величину силы R, приложенной в шарнире B под углом ABR=30° таким образом, чтобы четырехугольник ABDC был в равновесии, если углы CAQ=90°, DBR=60°.

Решение




Предыдущая задача №37
Два трамвайных провода подвешены к поперечным проволочным канатам, из которых каждый прикреплен к двум столбам. Столбы расставлены вдоль пути на расстоянии 40 м друг от друга. Для каждого поперечного каната расстояния AK=KL=LB=5 м; KC=LD=0,5 м. Пренебрегая весом проволочного каната, найти натяжения T1, T2 и T3 в частях его AC, CD и DB, если вес 1 м провода равен 7,5 Н.
Следующая задача №39
Стержневой шарнирный многоугольник состоит из четырех равных стержней; концы A и E шарнирно закреплены; узлы B, C и D нагружены одинаковой вертикальной нагрузкой Q. В положении равновесия угол наклона крайних стержней к горизонту α=60°. Определить угол β наклона средних стержней к горизонту.
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
2.8
2.9
2.10
2.11
2.12
2.13
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2.44
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2.55
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
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3.13
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4.1
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5.1
5.2
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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
19.2
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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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23.65
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23.71
24.1
24.2
24.3
24.4
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24.31
24.34
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25.1
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26.1
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27.1
27.2
27.3
27.4
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27.6
27.7
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27.34
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27.38
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27.44
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27.47
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27.55
27.58
27.59
27.60
27.61
27.62
27.63
27.64
27.65
28.1
28.2
28.3
28.4
28.5
28.6
28.7
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29.1
29.2
29.3
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29.6
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30.1
30.2
30.3
30.4
30.5
30.6
30.7
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31.1
31.2
31.3
31.4
31.5
31.6
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31.11
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31.15
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31.25
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31.32
31.33
31.34
31.35
32.1
32.2
32.3
32.4
32.5
32.6
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32.8
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32.10
32.11
32.12
32.13
32.14
32.15
32.16
32.17
32.18
32.19
32.20
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32.22
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32.24
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32.26
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32.28
32.29
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32.31
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32.34
32.35
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32.37
32.38
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32.48
32.49
32.50
32.51
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32.53
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32.55
32.56
32.57
32.58
32.59
32.60
32.61
32.62
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32.64
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32.66
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32.68
32.69
32.70
32.71
32.72
32.73
32.74
32.75
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32.77
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32.80
32.81
32.82
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32.84
32.85
32.86
32.87
32.88
32.89
32.90
32.91
32.92
32.93
32.94
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32.96
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32.100
32.101
32.102
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32.104
32.105
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32.107
33.1
33.2
33.3
33.4
33.5
33.6
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33.22
34.1
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34.5
34.6
34.7
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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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48.35
48.38
48.40
48.41
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48.43
48.44
48.48
48.49
49.1
49.2
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49.11
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53.5
53.12
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53.16
54.1
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54.18
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54.32
54.33
54.35
55.2
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56.3
56.7
56.9
ПравообладателямПользовательское соглашениеПолитика конфиденциальности • Контакты: e-mail: helplearn@yandex.ru