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If you submerge a 3cm cube of ice in cup of water, with what force

  1. Dec 6, 2011 #1
    1. The problem statement, all variables and given/known data
    If you submerge a 3cm cube of ice in cup of water, with what force will the ice float up to the surface


    2. Relevant equations

    ρgV, F=ma, ρgh

    3. The attempt at a solution

    I thought to draw free body diagram of vertical forces with mg of ice cube and ρicegAhtop surface as negative forces and positive buoyant force of ρwaterg(htop surface+.03cm)A summing to Fnet.
    End up getting ρwatergV-ρicegV=F
    I just want to make sure I got the right densities in right places, in other words when do you use the density of water and when do you use the density of ice?
     
  2. jcsd
  3. Dec 6, 2011 #2

    ehild

    User Avatar
    Homework Helper
    Gold Member

    Re: buoyancy

    It is correct.

    ehild
     
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