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Unformatted text preview: lab? List at least 3 make sure you include a systematic error source and a random error source. Label each as random or systematic. Other systematic errors that can happen in this lab are air resistance, and pulley friction, pulley mass. Random errors could result from the measurement process like the small differences in the reaction time of starting and stopping. 4. Wiki question: Explain why a traction elevator uses a counterweight and discuss how they set the mass of the counterweight. Bonus for mention of why they use slightly less than 50% for the counterweight. They use a counterweight to offset the weight of the car and passengers for balance and to ensure that the elevator cannot fall out of control when the cable is intact. It also reduces the power needed to move the car. Counterweights equal the weight of the elevator plus about 40-50% of its max rated load....
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This note was uploaded on 06/28/2011 for the course PHY 102M taught by Professor Staff during the Summer '08 term at University of Texas at Austin.
- Summer '08