Experiment 4 Density of the Mass Set In this experiment you will be become familiar with the mass set Materials Mass Set 10 N Spring Scale Vernier Caliper Procedure 1 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 Volume Table 4 Mass Set Density Data 2014 eScience Labs LLC All Rights Reserved Quantity Measurement Uncertainty Height 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 g Density g c3 7 67 g cm3 N A Post Lab Questions 1 Use Table 5 to determine what material the mass set is made of Be sure to take your uncertainty into consideration Using Table 5 provided below students were able to determine that the mass set was made from steel although the measurements were not exact The result in Table 4 for density is closer to the numerical value for density of steel Uncertainty must be taken into consideration when determining measurements Calculations and data can both be effected by inaccurate readings which is why it s important to take precaution when reading measurements and also when accounting for uncertainty 2014 eScience Labs LLC All Rights Reserved Table 5 Known Densities of Various Materials Material Density at 20 C Aluminum 2 70 g cm3 Copper 8 92 g cm3 Lead 11 34 g cm3 Nickel 8 90 g cm3 Silver 10 50 g cm3 Steel 7 80 g cm3 Zinc 7 14 g cm3
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