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TAMU PHYS 1401 - Experiment 2: The Spring Force Scale

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Experiment 2: The Spring Force ScaleBefore you begin an experiment using the spring scale, you may need to calibrate it. In this experiment, you will become familiar with how to calibrate and use the spring scale.MaterialsMass SetRoll of Masking TapeBox of Modeling ClaySingle Hole Punch 5 N Spring Scale10 N Spring ScaleStopwatchProcedureCalibrating a Spring Scale1. Hold the 5 N spring scale by the handle so that the measurement readings are right side up. This should leave the hook hanging from the bottom. 2. Observe the plunger (the plastic piece hanging from the spring) as you gently pull andrelease the hook. The top of the plunger that looks like a flat circular piece is called the indicator. 3. To calibrate the spring scale, observe the position of the indicator on the measurement scale. The indicator should rest at 0 g or 0 N when no force is applied (i.e., the hook is not being pulled on by anything). 4. If the indicator is in any position other than zero when at rest, adjust it by twisting theplastic bolt at the top of the spring scale until the indicator rests at the measurement 0 g or 0 N. 5. Repeat Steps 1 - 4 with the 10 N spring scale. Weighing a Mass1. Calibrate the 5 N spring scales if necessary. 2. Hold the spring scale upright by the metal handle and hook the stopwatch onto the spring scale hook so it freely hangs. 3. Observe how far the indicator moves on the measurement scale and record the mass in Table 2. 4. Determine and record the uncertainty in Table 2. 5. Repeat Steps 1 - 5 using the 10 N spring scale. © 2014 eScience Labs, LLC.All Rights Reserved6. Repeat Steps 1 - 6 for the box of modeling clay, roll of masking tape, and single hole punch. Table 2: Spring Scale MeasurementsObject5 N Spring ScaleWeight (g)Uncertainty (g)10 N Spring ScaleWeight (g)Uncertainty(g) Post-Lab Questions1. What are the advantages and disadvantages of using a spring scale to measure weight?2. What are sources of uncertainty when using a spring scale?© 2014 eScience Labs, LLC.All Rights


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