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Clown Ping-Pong Ball Experiment
 
A Clown that will not Lie Down
Materials you will need:

• Pen
• Scissors
• Sticky tape
• Ping-pong ball
• Plasticine (modelling clay)
• Thick paper (10cm x 5cm) or (4” x 2”)

 
Steps
 
1.  Cut the ping-pong ball (with adult supervision) along the join line of the ball all the way around.

2.  Place the paper snuggly inside one half of the ball and tape the outside to form a tube.

3.  Place tape around the bottom of the tube and onto the ball.

4.  Draw a face on the paper tube (the ping-pong being the clowns’ feet).

5.  Try standing your clown up (on the bottom of the ping-pong). It will not stand up.

6.  Put some pasticine (modelling clay) into the base of the clown and press it to get the clown to stand.

7.  Now try to push the clown over.

The clown will not lie down when you push the plasticine (modelling clay) in the base of the clown.  

Gravity pulls on the clown’s base so that it stands up.  If you try to push over the weighted clown, gravity still pulls on its base and the base will stay down and the head will flip up.

 
 
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