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
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2.3
2.4
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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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12.1
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19.1
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20.1
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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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27.1
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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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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
48.5
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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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56.7
56.9
ПравообладателямПользовательское соглашениеПолитика конфиденциальности • Контакты: e-mail: helplearn@yandex.ru