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Physics - Fluid Question with Solution | TestHub

PhysicsFluidArchimedes principleMedium3 minQB

PhysicsMediumsingle choice

The reading of a spring balance when a mass is weighed on it in air is 40gm. When the mass is immersed in water, its reading is 20gm. The specific gravity of the mass is :

Options:

Answer:

Solution:

The buoyant force is the loss of apparent weight:
$F_{b} = 40 - 20 = 20 gram - force$
$F_{b} = V ρ_{w} g, W = V ρ_{b} g$
$\frac{ρ _{b}}{ρ _{w}} = \frac{W}{F _{b}} = \frac{40}{20} = 2$

Stream:JEESubject:PhysicsTopic:FluidSubtopic:Archimedes principle

⏱ 3mℹ️ Source: QB

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