How to swing effectively? How to swing on your own

First of all, you need to understand that the energy of the swing comes from. On the swing, the person repeatedly changes the center of gravity through the action of standing up and squatting, thereby changing the potential energy of the "human-swing" system, so that the swing gradually accumulates energy and swings higher and higher. In terms of subdivision, a complete swing cycle consists of the following steps:

1. When the swing reaches the bottom, the person stands up.

2. When the swing reaches a high point, the person squats.

3. The swing returns to the bottom, and the person is in a state of squatting. Then the person stands up and returns to the state of 1. Compared with 3 and 1, because the person squats, the center of gravity is lowered, and a part of the potential energy is released, so that the speed of the 3 swing will be a little faster than 1, and the swing can swing higher and higher.

Therefore, there are several conclusions; Conclusion 1: In order to swing more effectively, the person must be perpendicular to the ground during the swing, because only in the vertical state, the potential energy of the changeable action of standing up and squatting is the largest. This point from the circus.

It can be seen that when the circus performer is swinging, even if the swing is at the highest point, the actor is standing on the swing and remains perpendicular to the ground. Conclusion 2: The point of standing up is exactly at the lowest part of the swing.

At the lowest point of the swing, the person's standing up movement is perpendicular to the speed of the swing and does not affect its speed. If you stand up too early or too late, the force of the person pedaling the swing will produce a component in the direction of the swing speed, and the height of the center of gravity that the person can lift when standing up will be affectedConclusion 3: The point of squatting should be selected when the swing is close to the level, and when the swing is horizontal, the squatting action can maximize the potential energy.

Otherwise, the effect of the lifting will be partially offset by the tension of the swing rope. This is the most effective way to swing. It's not that hard.

When we swing, if the person stands on the swing and does not move, the movement of the swing is similar to the movement of a single pendulum. When the swing swings from the lowest point to the highest point, gravity does negative work, and the kinetic energy of the system is converted into the potential energy of the system, and when the swing swings from the highest point back to the lowest point, the potential energy of the system is converted into the kinetic energy of the system, and the mechanical energy of the whole process is conserved, and the swing will swing of equal amplitude. If you want to swing higher and higher, you must use external force, swing yourself, there is no way to use external force, and the system will not be able to obtain energy from the outside world.

Only through the work done by the person swinging himself and the internal force of the rope can his internal energy be converted into the mechanical energy of the system, and the work of the person's internal force can only be achieved by standing up or squatting down on the swing. But when the person swings to the balanced position, the rope pulls hard with both hands, and the rope pulls the person with the same amount of reaction force. This force overcomes the gravitational force of the person and does the work to make the person stand up suddenly, and the center of gravity of the person will move upwards at this time.

If the system composed of people and swings is regarded as a pendulum, the cycloid is fixed at point O, and the expansion and contraction of the cycloid itself and the quality of the cycloid are ignored. Imagine a person squatting quickly at the maximum deflection angle and standing quickly at the lowest point, and the process of squatting and standing is completed in an instant. The squatting and standing of the human body leads to the lifting of the center of mass of the system, which is equivalent to an effective pendulum length change.

In this way, we abstract the system composed of people and swings into an original pendulum with variable pendulum length, which is called the variable pendulum length original pendulum model. This is shown in Figure 1. The path taken to complete the first swing center of mass is A-D-E-B-C, the equivalent pendulum length oa=ob=oc=l1 when the person is standing, and the equivalent pendulum length od=oe=of=l0,l0>ll when the person is squatting.

The back doesn't hurt this day:When swinging, the human body swings back and forth with the swing board, and the potential energy and kinetic energy of the direction and speed of movement and the height from the ground are constantly changing, so that the body is in between the rapid changes of overweight and weightlessness, and the balance of the body can be coordinated, so that the abdominal muscles.

Rhythmically contracting and relaxing, which increases the strength of the waist and abdomen, so playing a swing may indeed make the waist not hurt.

Disadvantage:While swinging is a convenient and healthy activity, it also needs to vary from person to person, such as if you have a heart condition.

Patients with high blood pressure should not play the swing.

Swing precautions.

The person swinging should stand up quickly when the swing moves to the lowest point, and then squat slowly, when the swing swings to the highest point, then stand up suddenly, and then slowly squat after the highest point, and then stand up violently when it reaches the lowest point, and then repeat the above action, that is, the swing foot thousands swing higher and higher.

Be sure to hold the two long ropes on the swing with both hands;Don't jump off the swing;Don't swing the swing too high. Playing on the swing safely can enhance friendship, and the Senju Hall is like a Korean ethnic group dressed in bright national costumes.

Women, in the midst of the cheers and cheers of the people, swinged, they would soar into the air, and then swoop down, enjoying themselves, and their long skirts fluttering in the wind, with a great sense of fluttering fairy.

Summary. Hello Swing method by yourself: first of all, the legs are straight, try to stretch forward, hold the two ropes with both hands, and lean forward as much as possible, when the swing swings to the top of the front end, quickly bend the legs and swing back, and lean back at the same time, when swinging to the highest point of the back end, then straighten the legs, push the legs forward, and lean forward at the same time, so that the cycle repeats, it will swing higher and higher.

Hello Swing method by yourself: first of all, the legs are straight, try to stretch forward, hold the two ropes with both hands, and lean forward as much as possible, when the swing swings to the top of the front end, quickly bend the legs and swing back, and lean back at the same time, when swinging to the highest point of the back end, then straighten the legs, push the legs forward, and lean forward at the same time, so that the cycle repeats, it will swing higher and higher.

The focus is on practice, and you must pay attention to safety when swinging.

Dear, swinging is a kind of sports entertainment. Because of its simple equipment and easy to learn, it was loved by people and quickly became popular everywhere. After the Han Dynasty, swings gradually became a folk custom activity carried out during festivals such as Qingming Festival and Dragon Boat Festival.

After the founding of the People's Republic of China, with the rise of various modern sports, swing sports have become a special activity for children in most parts of China, except for a few areas that are still widely popular.