You explained this incredibly well. Coming from an engineering student studying from home during the pandemic, your videos are a lifesavers. Thank you very much!

Thank you! It's really helpful to watch someone go through the motions.

Gracias, tus videos también ayudan a gente que habla otro idioma

Thank you so much sir. Your concept is very clear. You are great.

I came looking for how I can understand the sign of the answer and I got it plus an explanation for why that is. Great content :)

Perfect language. Thank You Sir!

You are correct - if you look at the coordinate system that I draw at 1:42 you will see that the y-axis has a zero value at the center line of the channel.

Thank you for this sir. Very helpful!

My only question is that the "y" in your formula represented the distance between the plate and where Umax is located? Thank you for showing this example.

Sir, when will fluid flow at any value of shear force or it should be greater than the viscosity of fluid?

can you please tell me where does 0.25 came from? ... I mean the y in last equation

Thank you. It's a really good explanation. But could I ask a question? what about the shear stress of the lower wall? if y= -0.25, then tau on fluid is positive,on the other hand, tau on wall is negative, so shear stress of the upper wall and lower wall are opposite directions. it's really confused.

Where the Y value is coming from?

How did u get value for y? Is it given in question?

won't Shear stress equal - of viscocity * velocity gradient

Where did the value for y come from?

This velocity profile doesn't make sense to me. The velocity is moving backwards at the wall (y= +/- h)?

how is 0.5mm equal 0.005 m, it would not be 0.0005?

y = 0.25 ×10^-3 where did that came from sir?

How value of mew is calculated?

why the result changed from -3.12 N/m² to +3.12 N/m², please explain 🙏

For y=h τ=μ*(du/dy)* (π/2) = 0.0013*(0.30/(0.00025) *(π/2)= 2.449 For y=-h τ=-2.449