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Calculating Volume Using Buoyant Forces

  1. Jul 5, 2009 #1
    I haven't done Physics in some time now and have forgotten how to do some rather simple calculations it seems.

    I am trying to calculate the volume of a cube (in cm^3) using the buoyant force of the cube when submerged into water. The given density of water I am using is 1.00g/cm^3 or 1000 kg/m^3. The mass of the cube is 90.6g, and 58.5g submerged.

    The buoyant force is 32.1g. Am I missing something here?

    Any help?
  2. jcsd
  3. Jul 5, 2009 #2

    Doc Al

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    Staff: Mentor

    I assume you mean that the apparent weight of the submerged cube equals the weight of a 58.5g mass.

    So far, so good. (With a similar comment as above.) So what's the volume of the cube? (Hint: Archimedes's principle.)
  4. Jul 5, 2009 #3
    Thank you for the help!
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