1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Finding Density of a Floating Block

  1. Feb 25, 2009 #1
    A uniform block of height 0.260 m, floats in water of density 1000 kg/m3. The bottom of the block is 0.2530 m below the surface of the water. What is the density of the block?

    fb = mg
    m=(pf)(v)
    d = m/v

    What i did was find the mass, using the volume of what is submerged, then when i found d using equation 3, i used the v of the whole block.
    I know im mixing something up here, but im not sure what it is..
     
  2. jcsd
  3. Feb 25, 2009 #2

    mgb_phys

    User Avatar
    Science Advisor
    Homework Helper

    The total weight of the block must equal the weight of water displaced.
    If the block was the same density as water all of it would be under the surface, if it was half the density of water half of it would be below the surface.
    What proportion is below the surface?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Finding Density of a Floating Block
  1. Density of a block (Replies: 6)

Loading...