buoyant force can be expressed as:
F(b) = W(air) - W(liquid) = d * g * v
where d is the density of the liquid, g is the acceleration of gravity and v is the volume of the immersed object (or the immersed part of the body if it floats). In this experiment the pan balances will compare masses in grams rather than weights. Since W=mg, the apparent change in mass when submerged is
m - m(apparent) = d(liquid) * v
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Buoyancy is used for many life examples, submarines, swimmers would like to know about it, and the army would use it. Those are some life examples that of real life that buoyancy would be used! Hope this helps!
Buoyancy.
Archimedes Principal is the principal for buoyancy
Ships, boats etc.
The object will float or sink.