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!

Homework Help: SG (Specific Gravity) in Fluid

  1. Apr 27, 2016 #1
    1. The problem statement, all variables and given/known data

    When asked for the bouancy of a hollow cylinder, containing air, submerged in ocean water.
    outer radius R.
    Length of cylinder = L
    The Material of the cylinder is neglected.

    I'm thinking the Bouancy (Force) = ρ ⋅ g ⋅ v
    where v = LπR^2 and therefore F = ρgLπR^2

    But the solutions manual states it is
    F = ρgLπR^2 ⋅ SG, where SG is Specific gravity of ocean water.
    Why do I need the SG part ?
  2. jcsd
  3. Apr 27, 2016 #2
    The density of the water affects the buoyancy of the object.
  4. Apr 27, 2016 #3


    User Avatar

    Staff: Mentor

    Hi CybernetcInside,

    In future, please use the entirely of the formatting template to lay out your questions.

    Did the book define what the variable ##\rho## stands for in its solution? You didn't define it in your work.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted