Задача №2.21

Условие

Шарик B веса P подвешен к неподвижной точке A посредством нити AB и лежит на поверхности гладкой сферы радиуса r; расстояние точки A от поверхности сферы AC=d, длина нити AB=l, прямая AO вертикальна. Определить натяжение T нити и реакцию Q сферы. Радиусом шарика пренебречь.

Решение




Предыдущая задача №20
Однородный шар веса 20 Н удерживается на гладкой наклонной плоскости тросом, который привязан к пружинным весам, укрепленным над плоскостью; показание пружинных весов 10 Н. Угол наклона плоскости к горизонту равен 30°. Определить угол α, составляемый направлением троса с вертикалью, и давление Q шара на плоскость. Весом пружинных весов пренебречь.
Следующая задача №22
Однородный шар веса 10 Н удерживается в равновесии двумя тросами AB и CD, расположенными в одной вертикальной плоскости и составляющими один с другим угол 150°. Трос AB наклонен к горизонту под углом 45°. Определить натяжение тросов.
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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2.10
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3.1
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3.3
3.4
3.5
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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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17.1
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18.1
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19.1
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20.1
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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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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
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32.89
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32.91
32.92
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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
48.6
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48.35
48.38
48.40
48.41
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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
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54.35
55.2
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55.25
55.38
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56.3
56.7
56.9
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