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Physics - Fluid Question with Solution | TestHub

PhysicsFluidViscosityEasy2 minPYQ_2020

PhysicsEasysingle choice

A metal sphere of mass 'm' and density ' $σ_{1}$ ' falls with terminal velocity through a container containing liquid. The density of liquid is ' $σ_{2}$ '. The viscous force acting on the sphere is

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Answer:

Solution:

$F = \frac{4}{3} π r^{3} (d_{1} - d_{2}) g$ $F = \frac{4}{3} π r^{3} d_{1} (1 - \frac{d _{2}}{d _{1}}) g = M (1 - \frac{d _{2}}{d _{1}}) g$

Stream:MHT_CETSubject:PhysicsTopic:FluidSubtopic:Viscosity

⏱ 2mℹ️ Source: PYQ_2020

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