Which statement is right? In the following lubrication flow with an angled slidi

Question

Which statement is right? In the following lubrication flow with an angled sliding plate, h_1/h_2. 1.5. velocity u > 0. The pressure distribution p(x) a. is symmetric along x position. b is asymmetric along x position. c is maximum at x = 0. d is maximum at x = L (10%) Two group students design a lubrication device shown in the figure above The only difference m their design is the ratio of h_1/h_2. In the first group s design. h_1/h_2 = 1.5 and its corresponding ratio of tangential force to the normal force is R_1 = 0.1. In the second group's design h_1/h_2 = 2 and its corresponding ratio of tangential force to the normal force Is R_2 Please calculate the R_2

Explanation / Answer

In this figure we can see...

h1 > h2

so lubrication flow from h1 towards h2.

length of plate is L

velocity u>0

accelaration = g

height = (h1 - h2)

we know, pressure = mass * accelaration

mass is constant

accelaration is gradualy increasing towards h2 and this will maximum at point L.

so, Pressure distribution will be maximum at x=L   

so, option d) is correct

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