Lab 4 PHYS 200

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Athabasca University, Athabasca *

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PHYS200

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Law

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Feb 20, 2024

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docx

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Mellino1 Athabasca University PHYS 200: Introductory Physics Lab Report 4: Hooke’s Law Date: June 17th, 2023
Mellino2 Introduction This lab will examine Hooke’s Law, which states that the extension/compression of a spring and other elastic objects is directly proportional to the force that acts on it. When the force applies to the spring (or other object) it stretches the spring. There are limitations to how much an elastic may stretch. The formula describing this relationship: F = k x Where k represents the spring constant and x represents the amount it stretches, applies only when the spring does not break by surpassing its elastic limit. The following photos demonstrates this relationship: Procedure To begin this lab the materials required are a rubber band/elastic, a plastic bag, 10 identical coins, a ruler, and a relatively strong tape. For this expirement the only rubber band I had available was a stretchy hair tie. I began by cutting that hair tie in half, so that I could use my tape to align both the elastic and the ruler to the wall as securely as possible. Secondly, I used a staple to fasten the plastic bag to the end of the elastic. At this
Mellino3 point, taking note of the original length of the elastic with the ruler. The original length of the rubber band (Lo) was equal to 11.5cm long. The following photographs demonstrate the set up, where the photo on the left demonstrates the original length with no coins, and the photo on the right demonstrates the set up as coins were being added. One by one, I added loonies, each time taking note of the length of the elastic each time. The following table represents the values as the procedure for the lab was followed. Number of coins (n) Rubber band length (L +/- 0.2cm) Rubber band stretch (x +/- 0.002m) Weight of coins (w +/- 0.118N) 0 Lo = 11.5cm 0m 0N 1 11.8cm 0.003m 0.0686N 2 12.0cm 0.005m 0.1372N
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