Lab #2 Aug30

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California Baptist University *

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101

Subject

Physics

Date

Apr 3, 2024

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docx

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4

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Measurement Experiment and Significant Figures Physics 101, Thursdays 11:00am September 6th, 2018 Abstract: This lab is aimed to practice and become accustomed to the different techniques and devices used to make and calculate various measurement. Also, to get consistent in terms of the use of the correct number of significant figures when writing down our answers and data. In this lab, we find the density and volume of a wooden cube and aluminum cylinder. Equipment: ● Meter stick ● Metric Ruler ● Triple beam balance
● Vernier caliper ● Micrometer ● Metal Cylinder ● Wooden Block Procedure: Step 1: Use the vernier caliper to obtain the dimensions of a wooden block. Two separate measurement values must be collected per person, A final of four measurements per object. Step 2: Use these dimensions to find the density. Calculate the average density. Step 3: compare your average density with the density provided by instructor, and calculate the percent error. Step 4: Obtain dimensions for cylinder. Use micrometer to determine the diameter of the cylinder. Step 5: Repeat steps 1-2 to calculate the density of a cylinder. Data: Wood Block Length Width Heighth 1st 5cm 5cm 5cm 2nd 5cm 4.9cm 5cm 3rd 4.95cm 4.9cm 5cm 4th 5.07cm 5.05cm 5.19cm Average 5.005cm 4.9625cm 5.0475cm Mass: 36g Cylinder Heighth Diameter 1st 5.08cm 12.69mm 2nd 5.09cm 12.68mm 3rd 5.09cm 12.67mm 4th 5.08cm 12.68mm Average 5.085cm 12.68mm Mass:18g
Calculations: Wood Block: Volume = L×W ×H =( 5.005 cm )( 4.9625 cm )( 5.0475 cm )= 125.366 cm ❑ 3 ❑ Density = mass volume ¿ 36 g 125.366 cm 3 = 0.28 g / c m 3 Cylinder: Volume = π d 2 h 4 = π ¿¿ Density = mass volume = 18 g 6.421 c m 3 = 2.80 g / c m 3 Results: Wood Block Volume: 125.366cm3 Density: 0.28g/cm3 Cylinder Volume: 6.421cm3 Density: 2.80g/cm3 Percent Error: Wood Block: % Error = 0.28 − 0.28 0.28 × 100% = 0%
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Cylinder: % Error = | 2.07 − 2.08 | 2.07 × 100% = 0.48% Conclusion: As expressed by the data above, we became familiar with calculating dimensions of objects with new equipment such as: vernier caliper, micrometer and a triple beam balance. We used this data to determine the density of (2) objecs, a wooden block and a metal cylinder. We learned how to calculate a percent error based on the average density and to successfully formulate a detail analysis of all the data.

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