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Bite-Size Physics

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You need:

1 egg

Plastic Bag

Hand

 

1. Hold your hand open.

2. Put the egg in the palm of your hand.

3. Close your fingers around the egg.

4. Put your hand into a plastic bag and hold the bag closed around your wrist.

5. With the bag held around your wrist, squeeze the egg. Feel free to squeeze it as

hard as you can.

 

Are you surprised that it didn’t break? (Or did it? Sometimes it breaks. Sorry if it

did!) It usually doesn’t break. The shape of the egg makes an egg very strong.

Every part of the egg supports every other part of the egg. The reason you

break it when you drop it or hit it against something is that you are putting pressure

on a very small part of the egg’s surface. By squeezing it, you are allowing

the egg to put all its force against you and its force is usually stronger than

yours. I’ve done this experiment with football players and they couldn’t break

the egg!

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