Question

If a barrel of oil weighs 1.5 kN, calculate the specific weight, density, and specific gravity of the oil. The barrel weighs 110 N

Answer 1

Answer

given,

oil barrel weight  = 1.5 k N = 1500 N

weight of the barrel = 110 N

Assuming volume of barrel = 0.159 m³

weight of oil = 1500-110

                     = 1390 N

$specific\ weight = \dfrac{weight}{volume}$

$specific\ weight = \dfrac{1390}{0.159}$

            = 8742.14 N/m³

$mass = \dfrac{weight}{g}$

$mass = \dfrac{1390}{9.8}$

              = 141.84 kg

$density = \dfrac{mass}{volume}$

$density = \dfrac{141.84}{0.159}$

                    = 892.05 kg/m³

$Specific\ gravity = \dfrac{density\ of\ oil}{density\ of\ water}$

$Specific\ gravity = \dfrac{892.05}{1000}$

                    = 0.892