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Homework Help: Archimedes Crown Question

  1. Nov 21, 2007 #1
    [SOLVED] Archimedes Crown Question


    This is the last question on a homework sheet, based on that interesting Archimedes story.

    "Archimedes put a golden coloured crown in some water an the level rose by 410cm^3. He then weighed it and found its mass to be 2.42kg. Was the crown made of gold?"

    It's all to do with density, which is Mass/Volume right? Using the m and v given here, I get 0.006kg cm^3. How do I find out if that is gold or not?

    Thanks for your time!
  2. jcsd
  3. Nov 21, 2007 #2


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    Look up the density of gold, of course.
  4. Nov 21, 2007 #3


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    You can't :rolleyes:
    The problem is that the strong surface tension of water (which e.g. makes it possible to put MORE than 1000 cm^3 of water in a 1000 cm^3 volume bowl) makes this method very inaccurate for an object as small as a crown.

    But since this is homework you should ignore this, pretend that the method works and just follow HallsofIvy's advice:wink:
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