Задача №38.53
Условие
Крестовина C приводится во вращение вокруг неподвижной оси O1 посредством однородного стержня AB, вращающегося вокруг неподвижной оси O (оси O и O1 перпендикулярны плоскости рисунка). При этом ползуны A и B, соединенные при помощи шарниров со стержнем AB, скользят вдоль взаимно перпендикулярных прорезей крестовины C. Вращение стержня происходит под действием постоянного вращающего момента mвр. Определить угловую скорость стержня AB в момент, когда он сделает четверть оборота, если в начальный момент при φ=0 он имел угловую скорость ω0. Величина момента сопротивления, возникающего в каждом из шарниров ползунов A и B, в два раза меньше mвр. Прочими силами сопротивления пренебречь. Масса стержня равна m; момент инерции крестовины C относительно оси O1 равен J; OO1=OA=OB=l.Решение
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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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2.9
2.10
2.11
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2.13
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2.33
2.34
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2.37
2.38
2.39
2.40
2.41
2.42
2.43
2.44
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2.53
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2.55
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
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4.1
4.2
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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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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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24.34
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25.1
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26.1
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27.1
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27.34
27.35
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28.1
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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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32.75
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32.86
32.87
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32.89
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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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48.48
48.49
49.1
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53.5
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54.1
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54.32
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54.35
55.2
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56.3
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