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Spinning Egg
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Starting & Stopping Experiment - Spinning Egg
 
Spinning Eggs
Materials you will need:

• X2 Plates
• x1 Hard boiled egg
• x1 Raw egg (uncooked)

Different bodies of masses experiment

eggs picture
 

Before you start this experiment see if you can decide which egg is raw and which egg is hard boiled?

Place the eggs on the two plates and start them spinning at the same time.

The egg that continues spinning for the longest time is the hard boiled egg.

Steps for the 1st experiment:

1. Place the uncooked egg on a plate and start it spinning.

2. Tap it lightly with your fingertip to stop the egg spinning.

3. Once the egg stops take your finger away immediately.

What happens to the egg?

The shell of the egg actually stops spinning but the inside (yolk and egg white) keeps spinning.

Because the inside of the raw egg is a liquid, it makes the egg start to spin again. This force is called inertia.

Steps for the 2nd experiment:

1. Place the hard-boiled egg on a plate and start it spinning.
2. Touch it lightly with your fingertip to stop the egg spinning.
3. Once the egg stops take your finger away immediately.

What happens to the egg?

The boiled egg stops spinning because the inside contents of the egg are a solid mass.

Steps for the 3rd experiment:

1. Place both eggs on each plate (one on each plate).
2. Start both eggs spinning at the same time.
3. Place / tap your finger on top of each egg at the same time to quickly stop them spinning.
4. Remove your finger from both eggs at the same time.

Now you can explain how the hard-boiled egg stops spinning and the raw egg continues to spin.

 
 
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