Guess What’s Inside (Funky Physics Experiments)

You will need:

1. 6-7 large round balloons
2. Small objects (like coins
   with smooth steel nuts,
   etc.)
3. Blindfold

Understand physics and play a game at the same time. As a party game try this experiment and learn something new. Who says games cannot teach us anything?

INSTRUCTIONS

1. Before you begin the game make sure that the balloons are opaque and nothing can be seen through them.
2. Take the balloons and place one small object inside each of them.
3. Blow up the balloons and tie them up so that they may remain inflated.
4. For the game tie a blindfold
   across the participant’s eyes.
5. If he cannot correctly figure it out, tell him the full-proof formula.
6. Take the balloon and move it in circles so as to get the object rolling inside.

RESULT

If the object has smooth corners (like a coin) then it will hardly make any noise. But if the object has rough corners (like a steel nut) then it will begin to make a roaring noise inside the balloon. This takes place because the object starts to move around in circles, horizontally inside the balloon, climbing higher and higher. While moving in fast circles inside the balloon, the rough edges of the steel nut hit the wall of the balloon making it bounce up and down as it rolls in circles causing vibrations. It travels through the air inside the balloon, creating a high-pitched noise.