ВХОД | РЕГИСТРАЦИЯ

Задача №8.11

Условие

Круглая пластинка, весом которой пренебрегаем, покоится в горизонтальном положении, опираясь центром на острие O. Не нарушая равновесия, по окружности пластинки разместили грузы: P1 веса 1,5 Н, P2 веса 1 Н и P3 веса 2 Н. Определить углы α и β.

Решение





Предыдущая задача №10
Круглый стол стоит на трех ножках A1, A2 и A3; в центре O помещен груз. Какому условию должны удовлетворять центральные углы φ1, φ2 и φ3 для того, чтобы давления на ножки A1, A2 и A3 относились, как 1:2:√3? При решении задачи берутся моменты сил относительно двух из радиусов OA1, OA2 и OA3.
Следующая задача №12
Ременный шкив CD динамо-машины имеет радиус 10 см; размеры вала AB указаны на рисунке. Натяжение верхней ведущей ветви ремня T1=100 Н, нижней ведомой T2=50 Н. Определить вращающий момент M и реакции подшипников A и B при равновесии системы, пренебрегая весом частей машины; (P,P) — пара, образуемая силами сопротивления.
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
2.14
2.15
2.16
2.17
2.18
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2.20
2.21
2.22
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2.44
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2.46
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2.48
2.49
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2.53
2.54
2.55
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
3.13
3.14
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3.20
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4.1
4.2
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4.4
4.5
4.6
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4.55
4.56
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4.74
5.1
5.2
5.3
5.4
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5.6
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5.42
6.1
6.2
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7.1
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8.1
8.2
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8.5
8.6
8.7
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8.11
8.12
8.13
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9.1
9.2
9.3
9.4
9.5
9.6
9.7
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10.1
10.2
10.3
10.4
10.5
10.6
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11.1
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12.1
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12.4
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13.1
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14.1
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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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23.65
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23.71
24.1
24.2
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24.34
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24.46
25.1
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26.1
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26.34
26.35
27.1
27.2
27.3
27.4
27.5
27.6
27.7
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27.32
27.33
27.34
27.35
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27.40
27.41
27.42
27.43
27.44
27.45
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27.47
27.48
27.49
27.50
27.51
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27.54
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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28.11
28.12
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28.22
29.1
29.2
29.3
29.4
29.5
29.6
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30.1
30.2
30.3
30.4
30.5
30.6
30.7
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30.30
31.1
31.2
31.3
31.4
31.5
31.6
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31.9
31.11
31.13
31.14
31.15
31.16
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31.18
31.19
31.20
31.21
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31.25
31.26
31.27
31.28
31.29
31.30
31.31
31.32
31.33
31.34
31.35
32.1
32.2
32.3
32.4
32.5
32.6
32.7
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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32.24
32.25
32.26
32.27
32.28
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32.31
32.32
32.33
32.34
32.35
32.36
32.37
32.38
32.39
32.40
32.41
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32.44
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32.46
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32.48
32.49
32.50
32.51
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32.53
32.54
32.55
32.56
32.57
32.58
32.59
32.60
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32.62
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32.64
32.65
32.66
32.67
32.68
32.69
32.70
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32.72
32.73
32.74
32.75
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32.84
32.85
32.86
32.87
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32.89
32.90
32.91
32.92
32.93
32.94
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32.96
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32.99
32.100
32.101
32.102
32.103
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32.105
32.106
32.107
33.1
33.2
33.3
33.4
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33.6
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33.22
34.1
34.2
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34.4
34.5
34.6
34.7
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34.10
34.11
34.12
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34.31
35.1
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36.1
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37.1
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37.59
38.1
38.2
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38.53
39.1
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39.4
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40.1
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41.1
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42.1
42.2
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42.4
42.5
42.6
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43.1
43.2
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44.1
44.2
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45.3
45.4
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45.37
46.1
46.2
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46.4
46.5
46.6
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46.32
47.1
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48.1
48.5
48.6
48.7
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48.12
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48.23
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48.31
48.33
48.34
48.35
48.38
48.40
48.41
48.42
48.43
48.44
48.48
48.49
49.1
49.2
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49.8
49.11
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49.16
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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55.38
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56.3
56.7
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