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- Spinning
- Yo-Yo's - Episode 204
  
Create-a-Chopper
Make a simple paper helicopter, like in the diagram to the right:
Now create an investigation that tells you how to design your
helicopter to do the following things:
a) spin quickly, or spin slowly
b) drop slowly;
c) different combinations of the options above.
Try changing things like the length of the propeller arms, the
width of the propeller arms, and the weight of the body. What
happens?
Hold a helicopter drop contest. Find a safe place from which
to drop your helicopters and try to make them land in a target
circle.
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