Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Calculating Objects Floatation Height

  1. May 30, 2004 #1
    Hello everyone I need help with a calculation.

    I want to determine the height an object will float in saltwater. After running the 'basic' displacement calcs Im not getting the results I need - not accurately enough anyway.
    I know that the water displaced by an object equals its weight, but Im confused as to a partially submerged object. Since the weight / displace ment are equal, and an object in the water weighs less than on air- how do you calculate this as far as a formula ?
    :confused: I am working on redesigning a submersible - and trying to figure where its going to float because I need to get it floating higher on the surface and trying to figure it all out - based on a picture I saw of a simular sub floating much higher than I thought it would I think I am designing the surface ballast tanks to low, and too large perhaps........

    Thanks everyone........
    Last edited: May 30, 2004
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted