Задача №27.8
Условие
По прямолинейному железнодорожному пути с углом наклона α=10° вагон катится с постоянной скоростью. Считая сопротивление трения пропорциональным нормальному давлению, определить ускорение вагона и его скорость через 20 с после начала движения, если он начал катиться без начальной скорости по пути с углом наклона β=15°. Определить также, какой путь пройдет вагон за это время.Решение
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1.1
1.2
1.3
1.4
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2.1
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3.1
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4.1
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9.1
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10.1
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12.1
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24.1
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27.1
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28.1
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30.1
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31.1
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32.1
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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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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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