Задача №30.2

Условие

В условиях предыдущей задачи определить скорость тела E в момент прохождения положения равновесия O, предполагая, что плоскость шероховата и коэффициент трения скольжения равен f.

Решение




Предыдущая задача №1
Тело E, масса которого равна m, находится на гладкой горизонтальной плоскости. К телу прикреплена пружина жесткости c, второй конец которой прикреплен к шарниру O1. Длина недеформированной пружины равна l0; OO1=l. В начальный момент тело E отклонено от положения равновесия O на конечную величину OE=a и отпущено без начальной скорости. Определить скорость тела в момент прохождения положения равновесия.
Следующая задача №3
Тело K находится на шероховатой наклонной плоскости в покое. Угол наклона плоскости к горизонту α и f0>tgα, где f0 — коэффициент трения покоя. В некоторый момент телу сообщена начальная скорость v0, направленная вдоль плоскости вниз. Определить путь s, пройденный телом до остановки, если коэффициент трения при движении равен f.
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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2.13
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3.1
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3.4
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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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13.1
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14.1
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15.1
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16.1
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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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21.2
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22.1
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23.1
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24.1
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24.34
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25.1
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26.1
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27.1
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27.55
27.58
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27.64
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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31.25
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31.33
31.34
31.35
32.1
32.2
32.3
32.4
32.5
32.6
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32.11
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32.13
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32.35
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32.48
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32.50
32.51
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32.53
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32.56
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32.59
32.60
32.61
32.62
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32.64
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32.66
32.67
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32.69
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32.71
32.72
32.73
32.74
32.75
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32.77
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32.81
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32.84
32.85
32.86
32.87
32.88
32.89
32.90
32.91
32.92
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32.94
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32.96
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32.99
32.100
32.101
32.102
32.103
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32.105
32.106
32.107
33.1
33.2
33.3
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34.1
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34.6
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35.1
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36.1
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37.1
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37.59
38.1
38.2
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38.53
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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43.13
44.1
44.2
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45.3
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45.37
46.1
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46.6
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46.21
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46.31
46.32
47.1
47.2
47.3
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47.6
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47.15
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47.17
47.18
47.19
48.1
48.5
48.6
48.7
48.9
48.10
48.12
48.13
48.14
48.15
48.19
48.23
48.24
48.26
48.27
48.28
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48.31
48.33
48.34
48.35
48.38
48.40
48.41
48.42
48.43
48.44
48.48
48.49
49.1
49.2
49.3
49.4
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49.11
49.12
49.13
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49.16
53.5
53.12
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53.16
54.1
54.2
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54.5
54.6
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54.18
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54.32
54.33
54.35
55.2
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55.21
55.25
55.38
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56.3
56.7
56.9
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