The pressure of swing movement, swing what kind of movement is swinging

The vertical height of the highest point of the triangle from the beam is degrees = meters.

Then the distance between the lowest point and the highest point is h=meter.

At the highest point: the child is stationary, with gravitational potential energy EP=MGH=25kg*10N kg*

Nadir point: Conversion of gravitational potential energy to kinetic energy ek=ep=

So m*v*v=625

Centrifugal force f=m*v*v r=625

So the pressure is =g+f=250+250=500n

This problem is done by conservation of energy.

Suppose the lowest point potential energy is zero.

There is no velocity at the highest point, only potential energy.

The lowest point velocity is horizontal, and there is only kinetic energy.

When the swing swings to the highest point, the angle between the rope and the vertical direction is 60 degrees, and it can be seen that the height of the swing to the lowest point is at the highest point.

So the potential energy potential of the highest point mgh=25*10*

When the swing reaches the lowest point, ignoring the energy loss, then the potential energy is all converted into kinetic energy, i.e., 25*25 2=(mv 2) 2

v=5m s

Again, at the lowest point, it can be seen that the velocity is 5 ms circular motion.

According to the formula, the centripetal force f=mv 2 r(r is the radius of circular motion, i.e., so f=25*5 2

This indicates that the centripetal force experienced by the child at the lowest point is 250N

According to the action force and reaction force, it can be seen that the pressure of the child on the swing is also 250N

When at the highest point, the velocity is zero, so 1 2mv*v=mgh, and when at the lowest point, f-mg=(mv*v) r

H = R-1 2R, so F = 2mg = 50N

First calculate the speed of the child at the bottom point according to the law of conservation of energy is 5m s, and calculate the centripetal force from f=mv 2 r to be 250n, and finally don't forget to consider gravity, so the final answer is 500n.

1. Swinging is a rotational motion.

2. Swing is a kind of sport created by ethnic minorities in northern China in ancient China. It was introduced to the Central Plains during the Spring and Autumn Period, and was deeply loved by people because of its simple equipment and easy to learn, and soon became popular in various places. After the Han Dynasty, swings gradually became a folk custom activity carried out during festivals such as Qingming Festival and Dragon Boat Festival and have been passed down to this day.

3. 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 the fact that swing sports are still widely popular in a few areas. In February 1986, the State Sports Commission formulated the "Swing Competition Rules" (draft), and in the same year, the swing was listed as an official competition item in the National Minority Sports Games. By the 6th National Minority Games in 1999, the swing had developed into a major event that included 6 individual events.

In ancient China, swinging was an activity for girls, and it was also a sport!