Swing can cultivate people's brave spirit, temper people's will, in the process of "swing", it can repeatedly stimulate the vestibular analyzer in the inner ear

When we are on the swing, if we stand still, the motion of swing is similar to that of pendulum. When the swing swings from the lowest point to the highest point

Kids swings mainly play a fitness role, so that children are subject to gravity and support.

The principle of the seesaw is the principle of leverage.

As a kind of amusement toy, the seesaw is very popular among children. But in the process of playing, there are also certain risks. The safe use of seesaws can make children play happier.

People are swinging, and the higher the swing, it shows that mechanical energy is not conserved and is constantly increasing. So where does this increase in mechanical energy come from?