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Skill 8 of 10
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Elastic force (Hooke’s law)

You want to bungee jump off a 50-metre bridge. You want to fly downwards, barely scrape the water and then be jolted back up by the elastic rope. Which rope should you pick?

How does such an elastic rope even work? A rope can supply a “holding up” force. An elastic rope can as well, but here the force becomes larger and larger, the more the rope elongates. Just like a spring that is harder and harder to compress/elongate, the more you have already compressed/elongated it. Why don’t we call this gradual force an elastic force.1

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References:

  1. Sears and Zemansky’s Univesity Physics with Modern Physics’ (book), Hugh D. Young & Roger A. Freedman, Pearson Education, 13th ed., 2012
  2. Hooke’s Law’ (web page), Netzsch, www.netzsch-thermal-analysis.com/de/industrien-branchen/glossary/hookes-law (accessed Oct. 5th, 2019)
  3. Douglas College Physics 1107: Fall 2019 and Winter 2020’ (book), OpenStax and Douglas College Physics Department, 2016, pressbooks.bccampus.ca/introductorygeneralphysics1phys1107
  4. Robert Hooke: Hooke’s Law’ (web page), Tecquipment Academia, 2018, www.tecquipment.com/knowledge/2018/robert-hooke-hookes-law (accessed Oct. 5th, 2019)