- Place a match or a cocktail stick between two forks.
- When they are attached, balance them on your finger tip.
The secret to this science stunt lies in the centre of gravity. This is the point about which you can balance the object as if all the masses were concentrated or gathered at this point.
So it is the point at which the object balances from left to right, front and back, and top and bottom.
In our balancing fork act, the centre of gravity is directly below the spot where the toothpick rests on your finger.
You may have seen a circus tightrope walker using a long stick for balance – well it is the same principle.