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Materials- String
- Scissors - 4 cups of water - tape - tray |
Procedure1) Turn the tray upside down.
2) Make 8 equal lengths of string 3) Tape down 2 pieces of string side by side, starting in the center. Do the same to the other 3 sides. At the end all the pieces of string should meet in the center. (creates an "x") 4) Turn tray over and tie the strings together. Make sure there is an equal balance. 5) Place the 4 cups of water in the tray. 6) Swing the tray in circles! |
Scientific TheoryWater has not escaped the cups due to centripetal force. When the tray moved in a circular path, the object was accelerating because the velocity was constantly changing direction. The force is directed towards the center, which is moving. Newtons First Law states objects continue to remain in motion unless acted upon an external force. While the water is falling, so is the bucket, catching the water. The string is the centripetal force that pulls the water toward the center.
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