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Unformatted text preview: 6. DISCUSSION The percent error in this experiment is fairly small because the weights and lengths have to be as precise as possible or else the system will not be in equilibrium. The percent error would have been smaller if there was more of a variety in smaller weights, which would allow the student to reach a more precise mass. 7. CONCLUSION I calculated the tension by equaling all the torques to zero, as the system is in equilibrium. There is a torque due to the string, due to the mass of the rod, and the masses hanging on the rod. Since the only unknown is the tension, it can be easily calculated and in turn, I can calculate the amount of mass needed on the other side of the pulley to maintain the equilibrium through Newtons second law. Page 2 of 2...
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 Spring '09
 WANG
 Physics, Force

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