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# Lab #5 - Experiment#5 Centripetal Force June 9 2008 Erin...

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Experiment #5 – Centripetal Force June 9, 2008 Erin Samplin Group Member: Catie Destio

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Abstract The main purpose of this laboratory experiment is to quantitatively determine the force required to produce uniform circular motion, F c , and to verify the theoretical equation: F c =mv 2 /R, where m= mass, v= velocity, and R= radius. Students learned how to use a rotating cross arm with an attached rotating mass. Frequencies were measured for various forces moving with uniform speed at a set radius. Data recorded was used to plot a graph of f 2 vs. F c . The slope of this graph was calculated to be 3.520 N. This value yields a 0.71% error in comparison to the theoretical slope, 3.545 N. Thus, the equation F c =mv 2 /R is verified and can be used to measure centripetal force. The value for the y- intercept, b, was experimentally calculated to -0.52. Possible errors include gross error, systematic error, and random error. Discussion Diagram Equations The following equations will be used in this laboratory experiment: F c = 4π 2 mRf 2 where F c = centripetal force, m= mass, R= radius, and f= frequency of rotation.
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Lab #5 - Experiment#5 Centripetal Force June 9 2008 Erin...

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