Kids Seasaw
According to the principle of leverage, the pressure of man on the seesaw is power and resistance, and the distance from the fixed point of man to the seesaw is the moment arm. The acceleration of gravity causes one to go up and one to go down. The acceleration of gravity of the higher one is greater than the acceleration of gravity of the lower one, so the higher one goes down, and the lower one goes up under the action of the lever principle, and so on. We all know that play on the seesaw is a need to cooperate to play up the amusement equipment, children play play request to have a good cooperation between the two children, so, the children's amusement equipment if not accompanied by adults, are not suitable for children under the age of 5 to play, because children don't know to take care of each other's feelings, don't want to play is going down, No matter what situation the other party is in, accidents are often easy to happen.
