Science Projects And Inventions

YOU NEED

• A cork
• A hard – boiled egg
• Two forks
• A bottle with a flat rimmed opening

This is  an old experiment. And the  illustration is self explanatory.   The mouth of the bottle should have a flat rim. Take the cork and cut it at the bottom so that it is concave enough  to fit on the end of the egg.

HOW DOES IT WORK?

The point  where the entire weight of an object is evenly balanced  is the centre of gravity. If you attach weights-a one kilogram and a two kilogram weight to different ends of a  broom handle then the centre of gravity would be closer  to the two kilogram weight. It will be the point where you could balance the broomstick in your hand. This explains why the centre of gravity is not necessarily at the speciall centre of an object should the object be shaped irregularly, the centre of gravity might not even  be a point on or in the object.