Question

Calculate the specific weight & Density of one litre of a liquid which weights 12 N

Answer 1

$\mathbb{\bold{ANSWER}}$

Density = 1.2 × 10³ kg/m³

Specific weight = 12 × 10³ N/m³

$\mathbb{\bold{EXPLANATION}}$

Given,

Weight = W = 12 N

Volume = V = 1 litre = 10⁻³ m³

We know that,

Weight = Mass × Acceleration due to gravity

W = mg

Hence,

Mass = m = W/g

m = 12/10

m = 1.2 kg

Also,

Density = Mass / Volume

ρ = m/V

ρ = 1.2 / 10⁻³

ρ = 1.2 × 10³ kg/m³

Specific weight = Weight / Volume

S.W. = 12 / 10⁻³

S.W. = 12 × 10³ N/m³