Задача №5.16
Условие
Груз B веса P удерживается с помощью троса BAD в равновесии при подъеме по шероховатой поверхности, имеющей форму четверти кругового цилиндра. Коэффициент трения между поверхностью и грузом f=tgφ, где φ — угол трения. Определить натяжение троса как функцию угла α. Найти условие, которому должен удовлетворять угол α, чтобы натяжение троса принимало экстремальное значение. Размерами груза и блока A пренебречь.Решение
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1.1
1.2
1.3
1.4
1.5
2.1
2.2
2.3
2.4
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3.1
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4.1
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5.1
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6.1
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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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19.1
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20.1
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23.1
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24.1
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25.1
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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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32.1
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32.53
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32.58
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32.64
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32.66
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32.69
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32.74
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32.107
33.1
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34.1
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35.1
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37.1
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38.1
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39.1
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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
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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
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