A block of weight W slides over a thin film of liquid of viscosity η with terminal velocity. The area of contact is A and the characteristic length is taken to be the thickness of the film of liquid. What is the Reynold's number for the flow? The density of the liquid is ρ. Assume a linear velocity profile.

Engineering

Physics

Motion of Block on Inclined Surface

Acceleration

Viscosity and Terminal Velocity New

Question

A block of weight W slides over a thin film of liquid of viscosity η with terminal velocity. The area of contact is A and the characteristic length is taken to be the thickness of the film of liquid. What is the Reynold's number for the flow? The density of the liquid is ρ. Assume a linear velocity profile.

$\frac{ρmgsin {θh}^{2}}{η^{2} A}$

$\frac{ρmgsin θh}{ηA}$

$\frac{ρmgsin {θh}^{2}}{η^{2} A^{2}}$

$\frac{ρmgsin {θh}^{2}}{ηA}$

LiveFree JEE Main Previous Year Online Papers Live Free JEE Advance Previous Year Online Papers

College PredictorLive

Know your College Admission Chances Based on your Rank/Percentile, Category and Home State.

Get your JEE Main Personalised Report with Top Predicted Colleges in JoSA

$R = \frac{ρvd}{η}$

$mgsin θ = \frac{ηAv}{h}$

$y = \frac{mgsin θh}{ηA}$

$R = \frac{Pmg \sin {θh}^{2}}{η^{2} A}$