Question

If 5m3 of a certain oil weighs 4000 kg(f). Calculate the specific weight, mass density and specific gravity of this oil.
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Answer 1

The specific weight, mass density and specific gravity  of this oil the $9\frac{kN}{m^{3}}$,$914.43\frac{kg}{m^{3}}$,$0.917$.

Explanation:

Volume $=5m^{3}$

Weight $=45kN$

Specific weight of the oil= $\frac{Weightoftheoil}{Volumeof the oil}$

Specific gravity=$\frac{Specificweightoftheoil}{Specificweightofwater}$

Mass density=$\frac{Specificweightoftheoil}{Accelerationduetogravity}$

$=\frac{45}{5}$

$=9$$\frac{kN}{m^{3}}$.(or)

$=914.43\frac{kg}{m^{3}}$

=$0.917$