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Energy – Catapult

WHAT YOU NEED

  • Lollipop Sticks
  • Elastic Bands
  • Glue
  • Bottle Top
  • Small Ball

The potential energy is stored in lollipop sticks; when we push down on the lollipop stick and then let go the stick springs back up and the energy is released and used to shoot a ball into the air! The more force you use pushing down on the stick , you store potential energy and more kenetic energy is released when the ball is released.

Instructions
1. To begin, put 7-8 lollipop sticks together like this and fasten the two sides together using the elastic band.
2. Take two more lollipop sticks and fasten on one side. Open out these two sticks and push in the group of 7-8 sticks.
3. Now we have to fasten it all together using more elastic bands.
4. Finally the lid needs to be glued onto the lollipop sticks.
5. Leave that a while for it to set. Once dry place the small ball into the lid and away it goes! See how far you can get the ball…

And how does it work?
The potential energy is stored in lollipop sticks; when we push down on the lollipop stick and then let go the stick springs back up and the energy is released and used to shoot a ball into the air! The more force you use pushing down on the stick , you store potential energy and more kenetic energy is released when the ball is released.

 

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