Extreme Science: Buzzing Balloon - Spokane, North Idaho News & Weather KHQ.com

Extreme Science

Extreme Science: Buzzing Balloon

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Extreme Science with Radical Rick Extreme Science with Radical Rick
What you will need:
  1. Balloon (9 inch or larger)
  2. One hex nut
  3. Adult supervision

Procedure:

  1. Insert your hex nut inside the balloon.
  2. Blow up the balloon and tie it off.
  3. Hold your inflated balloon and swirl it around in a circular motion causing the hex nut to roll around the inside of the balloon.

What is going on?

Your balloon is similar to what is known as a centrifuge. A centrifuge is a piece of equipment, generally driven by an electric motor (some older models were spun by hand), that puts an object in rotation around a fixed axis. Although your balloon does not have a fixed axis, you are causing the hex nut to rotate around the inside of your balloon. The hex nut actually wants to continue in a straight line but can’t because the balloon will not allow it to and is constantly changing the hex nuts direction (in a circular motion)

Since the hex nut is not round and has six sides, As it rolls around the inside of the balloon it creates a buzzing sound as each side of the hex nut comes in contact with the balloon.

Try this:

Try finding other objects that are not round and put them in another balloon to see what sounds they might make. Just make sure that they are not sharp objects as they will pop the balloon.

Now go have fun annoying your parents for a while!

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