.В системе, изображенной на рис.11.3, маленькие грузы имеют массу m, а большой груз-массу

.В системе, изображенной на рис.11.3, маленькие грузы имеют массу m, а большой груз-массу 4m. Найти силу, с которой маленький груз, находящийся слева, во время движения системы давит на большой? Нить считать невесомой, трением о блок пренебречь.
- Предмет:
  Физика
- Автор:
  alfredoclark
- 6 лет назад

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типа вес найти, P=m(g-a) т.к. вниз движетсяускорение найдем из условия что все связаны т.е. m*g и 5m*g и общий 6*m*a6m*a=5m*g-m*g
- Автор:
  cooke
- 6 лет назад
- 0
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Answer the questions. 1.Where did Kellie look for Sebastian's mum at first? 2.Who did Kellie find in the cafe? 3.Did she give the note to the police officer? 4.What words did Sebastian hear the robber say? 5.How did Sebastian,his mum and Kellie finally meet? 6.What did Sebastian's mum say to him when she saw him?
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Kellie looked for Sebastian's mum at home, but she was not there. Kellie thought about it and went to the cafe. She saw a lot of people there. One of them was a police officer. Mrs Clifford and Mum were sitting and talking with the police officer."Kellie!" - Mum came over to the dog. "Where is Sebastian?" Kellie gave Mum the note and she read it aloud. "The robber is at 10, Sainsbury Street. Get the police!""What a brave boy, and what a smart dog you are!" said the polise officer. "Go straight to the police car. Hurry up!"Sebastianwas standing behind a tree waiting for Kellie. He knew Kellie and Mum would be back soon. But he couldn't see the robber anymore. Suddenly thedoor opened and the robber came out house. He was going to get into hiscar. Sebastian wished he still had Kellie with him. The robber looked around. He saw the boy hiding behing the tree! "Hay, kid! I saw you earlier. Come here!" Sebastian was in danger now. He was ready to take off. The robber was coming at him..."Stop where you are!" The policecar arrived just in time. The robber stopped. Then Sebastian heard his dog barking. Kellie and Mum were running toward him. Thay were so happy to see him. The police officers made the robber get into the polise car. "Sebastan! Next time you decide to go catch a robber, please tell me first!" said Mum
- Предмет:
  Английский язык
- Автор:
  veleriojcva
- 6 лет назад
- Ответов:
  
  1
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Для каких из указанных равнин характерны наибольшие средние высоты:
а) Амазонская низменность
б) Бразильское плоскогорье
в) Восточно-Африканское плоскогорье
г) Восточно-Европейская равнина
д) Гвинейское плоскогорье
е) Западно-Сибирская равнина
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- Предмет:
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- Автор:
  aldencabt
- 6 лет назад
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помогите раставить знки препинания
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Та не iж мене вовчику-братику
- Предмет:
  Другие предметы
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- 6 лет назад
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Ex.1. Read the sentences. Find the predicate (2) and define the form of the verb (V.).

1. After that group the chemical elements.
2. Mark the time of the reactions in your laboratory-book.
3. After that radio this important information to the centre.
4. A lot of powerful elevator pumps deliver oil from the tankers to the oil tanks.
5. First mark and then number all the flasks containing acids.
6. After that oil the machine.
7. The device pumps the oil from the well.
8. In this place the buses round the corner.
9. There are four flasks on the desk, containing some mixtures. Add some water to the mixtures. The mixtures are dissolving. After that filter the solutions.
10. There are clocks that mark the time with an accuracy of one second per 300 years.
- Предмет:
  Английский язык
- Автор:
  edgar0rlx
- 6 лет назад
- Ответов:
  
  1
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