Join Date: Feb 2010
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Re: 100 lb of Lead Vs 100 lb of concrete
It's called specific gravity and all about weight for a given VOLUME , sort of a eureka moment. Since a cubic foot of ocean weighs 64 lbs (2 lbs of salt) a cubic foot of concrete weighs 64 lbs less in the water, If it's in the bilge it's all the same but your metacentric heights change but that's another story.
is the density
of something relative to the density of a reference material (usually pure water). In this case it's a bit more convenient to reference density directly, since the frame of reference keeps changing.
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