Задача №5.31
Условие
Однородный брус опирается в точке A на негладкий горизонтальный пол и удерживается в точке B веревкой. Коэффициент трения бруса о пол равен f. Угол α, образуемый брусом с полом, равен 45°. При каком угле φ наклона веревки к горизонту брус начнет скользить?Решение
☆
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1.1
1.2
1.3
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1.5
2.1
2.2
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3.1
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4.1
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5.1
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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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24.1
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25.1
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27.1
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27.65
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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32.75
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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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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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