||June 16, 2009 09:56
Wet or dry mass for calculating virtual mass of a towed object?
I would like to calculate the virtual mass (actual mass plus added mass) of a towed object, including the lines used to tow it. I'm calculating the mass of each component and summing them up. Do I use the wet rather than dry mass? If so, does it matter that a section of line is buoyant, so its wet mass is negative? [I guess it still requires force to tow it because its added mass is positive, but the concept is confusing.]