Experiment 4: Density of the Mass SetIn this experiment, you will be become familiar with the mass set.MaterialsMass Set10 N Spring ScaleVernier CaliperProcedure1. Use the Vernier caliper to find the height of the 100 g mass (from the mass set). Record the height in Table 4. 2. Determine the uncertainty of the height measurement and record it in Table 4. 3. Repeat Steps 1 - 2 to measure the diameter of the 100 g mass. 4. Calculate the radius by dividing the diameter by two. Record the radius in Table 4. 5. Determine the uncertainty and record it in Table 4. 6. Calibrate the spring scale if necessary and hook the 100 g mass on the hooked end of the scale. 7. Confirm that that mass is 100 grams. Record the mass in Table 4. 8. Determine the uncertainty and record it in Table 4. 9. Use the following equation to calculate the density of the 100 g mass. Record the density in Table 4. Density = Mass VolumeTable 4: Mass Set Density Data © 2014 eScience Labs, LLC.All Rights ReservedQuantity Measurement UncertaintyHeight (cm)2.2 cm ± 0.025 Diameter (cm)2.52 cm ± 0.025 Radius (D/2) (cm)1.26 cm ± 0.025 Mass (g) 100.00 g ± 10.00 gDensity (g/c3)7.67 g/cm3N/APost-Lab Questions1. Use Table 5 to determine what material the massset is made of? Be sure to take your uncertaintyinto consideration.Using Table 5 provided below, students were able todetermine that the mass set was made from steel, althoughthe measurements were not exact. The result in Table 4 fordensity is closer to the numerical value for density of steel.Uncertainty must be taken into consideration whendetermining measurements. Calculations and data can bothbe effected by inaccurate readings which is why it’simportant to take precaution when reading measurements,and also when accounting for uncertainty© 2014 eScience Labs, LLC.All Rights Reserved Table 5: Known Densities ofVarious MaterialsMaterial Density at 20°CAluminum 2.70 g/cm3Copper 8.92 g/cm3Lead 11.34 g/cm3Nickel 8.90 g/cm3Silver 10.50 g/cm3Steel 7.80 g/cm3Zinc 7.14
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