Thursday, September 16, 2010

Rat Race

The oldest's rat trap car for his physics class.  Fun stuff!  It's supposed to go at least 5 meters, and it went about 15 when we tried it out. 

Materials used:

4 CDs
1 rat trap
4 eye hooks
Part of 1 coat hanger
6 balloons (1 for each wheel, 2 for wheel grips)
Wooden dowel cut to make 2 axles
String (we used kite string) - String is tied around rear axle, so when you release the trap, it pulls the string off of rear axle like a top and makes the car go.

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