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Груз подняли на высоту 4м с помощью системы блоков.Свободный конец вытянули на 24м.Каким был выигрыш в силе? в работе?
Ответы 1
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В силе выиграли в 6 раз (24/4=6)Выигрыш в работе блок не дает.
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Автор:
anascott - 6 лет назад
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Father Elephant and Mother Elephant lived in Africa and they had aFather Elephant and Mother Elephant lived in Africa and they had a little Baby Elephant.
One day Father Elephant came home and saw that (что) his dear little Baby Elephant was sad.
And Father Elephant asked, "Why are you sad, my little Baby Elephant?"
Baby Elephant said, "Oh, Dad, I want to play in our school football team. But my socks, T-shirt and shorts are too small and I can't put them on." "Don't worry, my dear!" said Father Elephant. "I'll buy you nice new clothes."
They came to Mrs Lion's shop.
"Good morning, Mrs Lion," said Father Elephant,
"Good morning, Mr Elephant!" said Mrs Lion. "Can I help you?"
"Have you got any nice socks for my little Baby Elephant? I want to buy him some new socks," said Father Elephant. "All our socks are too (слишком) small for your Baby Elephant. But wait (подождите) a little, and my little Lions will
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Then Father Elephant paid (заплатил) for the socks and put them
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Baby Elephant was very glad, and he said, "I like my new socks
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said Father Elephant. So they went to Mrs Tiger's shop.
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Father Elephant and Mother Elephant had...
One day Father Elephant saw...
Baby Elephant wanted new...
They went to...
Little Lions made-Baby Elephant liked...
Answer the questions:
1) Why was Baby Elephant sad?
2) Why did they go to Mrs Lion's shop?
3) Why did Little Lions make new socks for Baby Elephant?
4) Why was Baby Elephant very glad?
5) Why did they go to Mrs Tiger's shop?
Read and act out:
a) a talk (разговор) between Father Elephant and Baby Elephant
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