What is the volume of a body immersed in kerosene if the buoyancy force is 120 N?

Buoyancy formula (Archimedes’ law):

F (A) = p * g * V,

where p is the density of the liquid (or gas),

g – acceleration of gravity,

V is the volume of a body immersed in a liquid (or gas),

F (A) – Repulsive force (Archimedes force).

Based on this formula, we find the volume of the body:

V = F (A) / (p * g)

Density of kerosene at 20 degrees Celsius: p = 800 kg / m ^ 3.

Free fall acceleration g = 9.8 m / s ^ 2.

Then:

V = 120 / (800 * 9.8) = 0.015 (m ^ 3)

Answer: V = 0.015 (m ^ 3)