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Physics - Fluid Question with Solution | TestHub

PhysicsFluidViscosityEasy2 minPYQ_2020

PhysicsEasysingle choice

A Newtonian fluid fills the clearance between a shaft and a sleeve. When a force of $800 N$ is applied to the shaft, parallel to the sleeve, the shaft attains a speed of $2 cm s^{- 1}$ . If a force of $2.4 kN$ is applied instead, the shaft would move with a speed of

Options:

Answer:

Solution:

Viscous force is given by

$F = η A \frac{v}{d}$

$\frac{F_{1}}{F_{2}} = \frac{v_{1}}{v_{2}}$

$\frac{800}{2400} = \frac{2}{v_{2}}$

$v_{2} = 6 c m / s$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:FluidSubtopic:Viscosity

⏱ 2mℹ️ Source: PYQ_2020

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