Задача №45.31
Условие
Шарообразная водяная капля падает вертикально в атмосфере, насыщенной водяными парами. Вследствие конденсации масса капли возрастает пропорционально площади ее поверхности (коэффициент пропорциональности α). Начальный радиус капли r0, ее начальная скорость v0, начальная высота h0. Определить скорость капли и закон изменения ее высоты со временем (сопротивлением движению пренебречь). Указание. Показать, что dr=αdt, и перейти к новой независимой переменной r.Решение
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Добавить в избранное
1.1
1.2
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2.1
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3.1
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4.1
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5.1
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24.1
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28.1
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31.1
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32.1
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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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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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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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