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Calculation of density by the weights in air and in liquid

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The density of an object, weighing WA (kgf) in air and weighing WL (kgf) in a liquid having its density ¥ñ (kg / m^3), can be calculated as follows. (Ignore buoyancy by air)

Weight in air: WA = MO * g
Weight in liquid: WL = (MO-ML) * g

Where,
MO: mass of the object (kg),
ML: mass of the liquid (kg)

WA - WL = ML*g ¡æ ML = (WA-WL)/g = ¥ñ*V

MO = WA/g

V = (WA-WL)/(¥ñ*g)

Where, V : volume of the object

Then, the density of the object is:

¥ño = MO / V = ¥ñ*WA / (WA-WL)


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¥ño = ¥ñ*WA / (WA-WL)
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