Do The Density And The Specific Weight Change Under Different Gravity
Do the density and the specific weight change under different gravity
DENSITY, in short definition, is the degree of compactness of a certain object or substance. In science, we normally define it as the mass per unit volume.
density = mass / volume
Moreover, density is an INTENSIVE PROPERTY - the property of a material/object which does not depend on the mass of the object or its quantity; thus the density of an object is constant regardless of its mass or size.
SPECIFIC WEIGHT, on the other hand, is the weight per unit volume of a certain object/material. It is also called as the unit weight.
Specific weight = weight / volume
As opposed to density, specific weight is not constant.
Why?
Because as seen on its formula, its value is dependent on weight and volume. Even if we consider that volume is not affected by gravity, specific weight would still be affected using the weight.
Recall that weight is the bodys relative mass being contained in the body which gives the downward force or we typically say how heavy the object/body is.
If we further use the formula in finding the weight, we have
weight = mass x acceleration due to gravity
w = m x g
Notice that if we are to use the formula, mass as constant, increasing or decreasing the value of the acceleration due to gravity would increase/decrease the value of the weight. Thus, an increase/decrease of the value of the weight would also further increase/decrease the value of the specific weight.
Therefore, the density does not change in different gravity, but the specific weight does.
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