Today you used the concept of centripetal force to validate the value of g near earth's surface. The pre-lab sort of leads you to a less accurate method of finding g because I originally wrote this for a conceptual class and they weren't familiar with linearization, but if you want to have a more accurate answer think about the practice AP problem from Friday.
You only need to turn in one paper per group. The group with the lowest percent error per period will get a slight amount of extra credit.
No homework tonight (except for finishing your lab).
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