Phys1130 Lab 5

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University of Guelph *

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1130

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Mechanical Engineering

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Apr 3, 2024

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pdf

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3

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PHYS1130 Lab 5 Balance and Moments Exercise 1: - Length between the flat edge and pivot point of Skewer: 12.00 cm - Length of Bamboo Skewer: 24.90 cm Uncertainty of measurement: ± 0.05 cm Is the centre of mass in the exact centre of the bamboo skewer? Why Exercise 2:
Length A1: 2.2 cm Length A2: 8.2 cm Length B1: 4.6cm Length B2: 15.1 cm Length C1: 5.15 cm Length C2 12.5 cm Variable Measured Value Absolute Uncertainty Fractional Uncertainty m-known 5.0g 0.1g 0.02 = 2% m-small nut 12.1g 1.2g 0.10 = 10% m-large nut 50.0g 0.5g 0.01 = 1% m-Bamboo 1.40 g 0.03g 0.02 = 2% m-Magnifier 15.23 g m-Mobile 86.53 g
r-known 12.5cm r-small nut 5.1cm r-large nut 15.1cm r-known side 8.2cm r-magnifier r-magnifier 15.1cm Exercise 3 Baseline: -2.058 N Avg force of iolab+s-hook: -3.204 N -2.058 -(-3.204) = 1.146 of mobile Question: Based on your uncertainty values, do you think the mass of your magnifying glass would have been more accurate if you added in the mass of the string (Note: each string has a mass of 0.06 g)? (1 pt) Exercise 3 (2 pts) : Question: Based on your comparison between the measured mass and calculated mass (from individual components), do you think it was acceptable to ignore the mass of the string and tape? +
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