I take a boat to practice water floating, how do you practice water floating?

Learn breaststroke, freestyle, backstroke, before going into the water, do some exercise, let the body relax, it is conducive to going into the water without cramps, you can find a swimming ring, put it on yourself,

With the help of your family or the edge of the pool, relax and let your body float on the surface of the water, allowing your body to feel the buoyancy of the water.

At this time, you should exercise your lung vitality, and to make yourself as light as a swallow, the most important thing is to be able to swim in time after falling into the water to save yourself, you can ask the corresponding personnel to guide.

At first, stay in the water so that you can get used to the buoyancy of the water, and then grab the stone and slide your legs up and down.

If you want to learn Qiu Qianren's mastery of water floating, you still need some effort. People do not sink on water, mainly because of the support of water on the human body. From the perspective of mechanics, I will discuss how ordinary people can "float on water".

1.Force analysis <> of surface people

At rest, the force of the human body on the surface of the water should be simple, as shown in the figure below. There is gravity g and water surface support fIn this case, gravity g cannot be changed. Therefore, if you want to become water floating, you have to find a way to raise f.

2.Influencing factors of buoyancy.

Through force analysis, the key factor is this f, which is buoyancy. For students who have studied physics in junior high and high school, buoyancy should not be a problem. The buoyancy is calculated as follows and is related to the density of the water, the acceleration due to gravity, and the depth of the water.

For iron palm water floating, the only parameter that can be controlled is the water depth h.

In order to get enough buoyancy, you must have enough water depth. According to this logic, the human body will never "float on water". Because the gravitational pull is too great, there must be enough depth.

3.The mechanical principle of "floating on water".

The above stress analysis is for static. If the human body moves, can it get extra "force"? We can take inspiration from the wasteful game of water.

When an object flies quickly over the water, it does not go deep underwater. Why? Does the buoyancy formula not work on moving objects?

In fact, buoyancy still acts on moving objects. But at this time, buoyancy is not the main ** of the upward force, there is another additional upward force, which is the supporting force of the entire water surface.

Why is the water surface so supportive for a fast-moving object? Going deeper, the internal mechanics are still very complex. In simple terms, fast-moving objects interact with bodies of water, which are unable to react to displacement and deformation, so water visually becomes "harder".

The faster the speed, the harder the water. In the formula, there is enough support to support the object.

4.How the average person perceives <> floating on water

Knowing the principle of "floating on water", it is impossible for ordinary people to achieve it without the help of external objects. No matter how fast a person goes, it is still a small speed compared to a machine. Even if a person can move at a speed that can reach the speed of slapping water, the human body cannot float because the human body is too heavy and needs much faster speed than a stone.

To achieve water floating, we mainly rely on the following two tools: <>

1) The engine provides enough forward speed so that the water body becomes more "hard" and does not have time to react.

2) Special shoes, boat-shaped shoes can increase some buoyancy very well, especially when they hit the water surface, so that they will not be stuck in the water and cannot get out.

5.Summary. Ordinary people will never be able to achieve "water floating", and it is impossible to achieve faster movement speed due to the limitations of human body functions.

So we have to use other tools to understand water floating. Just like Brother Qiu, he put a bunch of things under the water, and when he stood up, he looked like he was floating on water.

A small boat is needed, and when a person rows on it, it will be particularly smooth and fluttering in the wind. This kind of scene is very comfortable.

Then you need some props, first tie a rope to your body, then use a machine to hang yourself, and then run on the water by yourself, recording from a distance as if you are really "floating on water".

You can go to the Dead Sea, the world's lowest lake in Israel, where you can literally float on the water.

Qin, the questions you ask are so white, if you want to learn, practice them yourself.