Center of gravity experiment for kids
Let make a very interesting experiment for kids. Each object has a “special” point, it is called center of gravity, object’s weight is evenly distributed around it. You can balance things in a way that does not seem real, if you place the center of gravity properly.
You will need:
2 identical forks
Matches or lighter
Take 2 identical forks and connect them. Insert the toothpick 1 cm deep in the middle. Now try to balance the toothpick on the edge of the glass. Handles of forks should be placed toward the glass. You got it?
How it works:
If you place objects in a certain way, they will not fall down. Gravity pulls every part of the object to different directions, but if you balance all of its parts, then you can find the center of gravity. If objects are joined together, like the forks and the toothpick, they have a common center of gravity. Forks do not fall because the center of gravity is directly under the edge of the glass, where the point of support is. Toothpick weighs so little that it almost does not change their center of gravity.