ВХОД | РЕГИСТРАЦИЯ

Задача №26.29

Условие

Велосипедист описывает кривую радиуса 10 м со скоростью 5 м/сек. Найти угол наклона срединной плоскости велосипеда к вертикали, а также тот наименьший коэффициент трения между шинами велосипеда и полотном дороги, при котором будет обеспечена устойчивость велосипеда.

Решение





Предыдущая задача №28
Груз M веса 10 Н подвешен к тросу длины l=2 м и совершает вместе с тросом колебания согласно уравнению
φ = π/6 sin 2πt,
где φ — угол отклонения троса от вертикали в радианах, t — время в секундах. Определить натяжения T1 и T2 троса в верхнем и нижнем положениях груза.
Следующая задача №30
Велосипедный трек на кривых участках пути имеет виражи, профиль которых в поперечном сечении представляет собой прямую, наклонную к горизонту, так что на кривых участках внешний край трека выше внутреннего. С какой наименьшей и с какой наибольшей скоростью можно ехать по виражу, имеющему радиус R и угол наклона к горизонту α, если коэффициент трения резиновых шин о грунт трека 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
2.7
2.8
2.9
2.10
2.11
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2.13
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2.55
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
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3.13
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4.1
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5.1
5.2
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6.1
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7.1
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8.1
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9.1
9.2
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9.4
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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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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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25.1
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26.1
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26.35
27.1
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27.34
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27.48
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27.55
27.58
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27.61
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27.63
27.64
27.65
28.1
28.2
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28.5
28.6
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29.1
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30.1
30.2
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31.1
31.2
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31.4
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31.11
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31.25
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31.33
31.34
31.35
32.1
32.2
32.3
32.4
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32.6
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32.11
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32.13
32.14
32.15
32.16
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32.20
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32.35
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32.48
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32.50
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32.53
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32.55
32.56
32.57
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32.61
32.62
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32.64
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32.66
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32.69
32.70
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
32.104
32.105
32.106
32.107
33.1
33.2
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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
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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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44.1
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45.3
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45.37
46.1
46.2
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46.32
47.1
47.2
47.3
47.4
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47.7
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47.19
48.1
48.5
48.6
48.7
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48.12
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48.19
48.23
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48.31
48.33
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48.35
48.38
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48.41
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48.43
48.44
48.48
48.49
49.1
49.2
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49.4
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49.8
49.11
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49.16
53.5
53.12
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53.16
54.1
54.2
54.3
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54.18
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54.22
54.32
54.33
54.35
55.2
55.3
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55.25
55.38
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55.44
56.3
56.7
56.9

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