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Difference between the amount of water displaced by a floating vs submerged object?

  1. Oct 9, 2012 #1
    difference between the amount of water displaced by a floating vs submerged object??

    I'm so confused.

    Let's say you have the mass and density of a floating object. How would you find the volume of the water displaced? And how is this different from finding the volume of water displaced by the object if it were submerged?

    PLEASE HELP!
     
  2. jcsd
  3. Oct 9, 2012 #2
    Re: difference between the amount of water displaced by a floating vs submerged objec

    For a submerged object, the volume of water displaced is equal to the volume of the object.

    For a floating object, it will displace a water weight equal to the object weight.

    So you don't need to know the density of the object, except to verify if it is greater than or less than the density of water. That determines if it will float or not. But you will also need to know the density of the water.
     
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