What kind of nature question can I ask?

Yes, just use the fixed pulley The potential energy of the person and the basket increases at the same time, and this force is given by the fixed point of the fixed pulley, so the work done is not done by man, and the external force (the force that supports the fixed pulley) is absolutely fine

It should be possible, using a fixed pulley, and then as long as the strength of the person is strong enough, the person can lift the basket up when it rises. (Man is like climbing a pole).

It should be possible, pull it up by means of a fixed pulley.

Draw a force analysis diagram yourself and take a look, you should understand! ~~

The statement upstairs is not correct, the increase in potential energy is the result of the work done by the arm strength, and it is the conversion of biological energy into potential energy. ~~

OK. And the hands and feet are subjected to the same amount of force (one-half body weight, at a constant speed).

Yes, use a fixed pulley to pull the other end of the rope.

The force pulled by a person is the internal force of the system composed of a person and a basket, and the gravitational potential energy of the system cannot be increased by doing work. So it's impossible.

OK. There is this project in the Anhui Provincial Science and Technology Museum, as long as your arm strength is big enough, you can pull.

If you add a fixed pulley, it's easy.

OK. As long as you have more strength than your own weight and basket.

Yes, I've done this problem with a fixed pulley.

Absolutely. I just don't know who did the experiment?

No, ......Action and reaction forces.

It's okay to use a fixed pulley, but it's just very tiring.

The following is a spine of some questions about nature, you can choose the questions you are interested in**:

1.What are the ways in which different organisms interact with each other in nature?

2.What is ecological balance and what impact does it have on nature?

4.How does the atmospheric greenhouse effect affect the Earth's climate change?

5.What is environmental protection and what does it mean for humanity in the future?

6.What are some of nature's miracles?

8.How can natural resources be assessed and managed, and protected for their sustainable development?

9.What role does each species in nature play in the ecosystem as a whole?

10.How do geological activities, geophysical phenomena and meteorology in nature affect our lives?

1. The problem of nature is that there are natural disasters, natural disasters are: landslides, snow avalanches, droughts, forest fires, floods, tsunamis, volcanic eruptions, tornadoes, typhoons.

2. Natural disasters are abnormal phenomena that occur in the natural world on which human beings depend, and the harm caused by natural disasters to human society is often shocking. Among them, there are sudden disasters such as volcanic eruptions, mudslides, tsunamis, typhoons, and floods;

3. There are also gradual disasters such as land subsidence, land desertification, drought, and coastline changes that can only gradually appear in a long period of time; There are also environmental disasters caused by human activities such as changes in the ozone layer, water pollution, loss of water and soil flow, and acid rain.

1. Why does it snow in winter? 2. Why is the grass green when the spring breeze blows? 3. Why do the clouds in the sky drift around?

4. Why does a rainbow appear after the rain? 5. Why does the sun rise in the east? 6. Why does the sun set in the west?

7. Why is the moon sometimes round and sometimes curved? 8. Why do stars blink? 9. Why is there a rainbow hanging in the sky after the rain?

10. Why are flowers colorful?

Nature in a broad sense, the entire objective material world, including human society. This material world exists and changes in a natural way. Human consciousness is also the material world in which it occurs in a natural way.

Man and human consciousness are the highest product of the development of nature. The material world is systematic, complex, and infinitely diverse. It includes both the material world known to mankind and the material world unknown to mankind.

Nature in a narrow sense refers to the material world, which is different from human society. That is, the inorganic and organic worlds studied by natural science.

1. Why do stars blink? 2. Why is there a rainbow hanging in the sky after the rain? 3. Why are there various shapes of leaves?

4. Why are flowers colorful? 5. Where did the spider flee before it rained? 6. Who told the cicadas that it was going to rain.

7. How can there be shells on the stones? 8. Why do we see the moon in a different shape every day? <

1. Why do stars blink?

2. Why is there a rainbow hanging in the sky after the rain?

3. There are various reasons why the shape of the leaves is poor.

4. Why are flowers colorful?

5. Where did the spider flee before the rain in the next mu hall.

6. Who told the cicadas that it was going to rain.

7. How can there be shells on the stones?

8. Why do we see the moon in a different shape every day?

1. Why does it rain in the sky?

In fact, it rains because the moisture in the air evaporates into the clouds, and when the moisture increases, raindrops fall.

2. Why do stars blink?

Because there are two kinds of air in the atmosphere. Cold air flows upwards and hot air flows downwards, causing changes in the atmosphere. So the stars will twinkle and twinkle.

3. Why are there meteors?

Because some relatively small damaged rocks touch the earth, they burn through the atmosphere, and they burn up before they reach the ground, and the sparks formed in the process are like meteors when we look on the earth.

4. Why is the sunshine longer in summer than in winter?

The earth revolves around the sun at a certain angle, and the northern hemisphere is closer to the sun in summer, so the sunshine time will be longer; In winter, the Northern Hemisphere is slightly farther away from the Sun, so the hours of daylight will be shorter.

5. Why do flowers have various colors?

The petals contain a substance called anthocyanins, which resemble a "chameleon". In an acidic solution, it appears red; In a neutral solution, it appears purple again; In alkaline solutions, it appears blue again.

The phenomenon of thunder in nature

When the air near the ground is constantly heated and rises, and the cold air in the upper layer sinks, a strong convection is formed, thus forming a towering cumulonimbus cloud, and the water vapor in the cloud rushes everywhere, which will produce static electricity, and the upper end of the cloud will produce a positive charge.

The lower end of the cloud will produce a negative charge, and the ground is a positive charge, when the charge is neutralized, it will emit a large amount of light and heat, so that the air expands in an instant, and the light is lightning, and the expansion is thunder.

Hello! Here's what you can answer.

1.Why does it happen every year in some places?

2.How do some leaves turn red?

3.Rain, fell from **?

4.Thunder and lightning, who appeared first?

The word Ming is used to describe nature.

Why is the sky so blue? How is seawater salt? I'm here**? And who?

1 Why do fish live in water?

Yes, you can ask any question about nature, such as weather, geography, ecology, animals, plants, etc.

1. Why do stars blink?

2. Why is there a rainbow hanging in the sky after the rain?

3. Why are there various shapes of leaves?

4. Why are flowers colorful?

5. Why does it rain when swallows fly low?

6. Why does it rain when ants move?

7. Why does the water flow to a lower place?

8. Why do we see the moon in a different shape every day?

9. How can there be shells on the stones?

The natural world refers to the entire objective world, including human society, while the environment refers to the sum of all objective things centered on man. The environment can be divided into the natural environment and the social environment. The natural environment refers to the atmosphere, pure water, soil, rocks, and the biosphere.

The social environment refers to the creations of human beings, such as industry and agriculture, cities, transportation, entertainment venues, cultural relics and scenic spots. The Northern Lights are one of the most beautiful landscapes on Earth, and people have been fascinated by the mystery and beauty of the Northern Lights phenomenon since they discovered it. Normally, the Northern Lights are born when the sun releases high-energy charged particles that are released from space at a speed of 300 to 1,200 kilometers per second, and these charged particles form cloud-like structures called plasma zones.

1. Why are flowers colorful?

2. Why does the apple tree grow hail apples?

3. Why do stars shine?

4. Why are there various shapes of leaves?

5. Why is there a rainbow hanging in the sky after the rain?

6. Who told the cicadas that it was going to rain.

7. Before the rain, the spider fled to **?

8. How can there be shells on the stones?

9. How does a trembling black hole form an eggplant?