The weight specific of a substance is defined as its weight per unit volume .
is calculated by dividing the weight of a body or material portion of the volume it occupies. In Technical System , measured in kiloponds by cubic meter (kp / m). In International System of Units , in newton by cubic meter (N / m).
Where:
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= weight
-
= the weight of substance
-
= the volume that the substance occupies
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= is the density of the substance
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= is the acceleration of gravity
As kilopond represents the weight of a kilogram on Earth, this figure expressed in kp / m has the same numerical value as the density expressed in kg / m³.
As we see, is intimately linked to the density of any material and easy to use in ground units. However, its use is very limited or even incorrect in physics.
Ivan Avila Monroy
http://es.wikipedia.org/wiki/Peso_espec% C3% ADfico
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