Question 13: Kor the bottom fluid 1. what equation relates the velocity gradient (du/dy) to the speed Viol the thin plate? (a) du/dy = Vilcb (b) du/dy = u V1*cb (c) du/dy = u Vilcb (d) du/dy Vi*cb (e) none of the above Question 14: For Fluid 2, what equation relates the velocity gradient (du/dy) to the speed V2 of the top plate? (a) du/dy = V2lb ()du/dy = (V2- V1)/ (b-cb) (c) du/dy = u V2/ (b-cb) (d) du/dy = V;*(b-cb) (е) попе of the above What equation relates the velocity on the top plate (V2) to the velocity on the lower thin plate (V1)? Question 15: (a) (V1/V2)=c / (c+1) (b) (V1/V2) = 3c / (c+1) (c) (V1/V2)=2c / (c-1) (d) (V1/V2)=2c / (c+1) allesut (е) попе ofthe above

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
Section: Chapter Questions
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Hey could you help me and show me exactly how to get to the correct answer for 13, 14, and 15 please

For the bottom fluid 1, what equation relates the velocity gradient (du/dy) to the speed Vi of
Question 13:
the e bottom fluid 1, what equation relates the velocity gradient (du/dy) to the speed Vi of
the thin plate?
(a) du/dy = Vilcb
(b) du/dy = u V1*cb
(а)
(c) du/dy = u Vilcb
(d) du/dy
V1*cb
(е) попе оf the above
Question 14:
For Fluid 2, what equation relates the velocity gradient (du/dy) to the speed V2 of the top plate?
(a) du/dy = V2 lb
(b) du/dy = (V2- V1) / (b-cb)
(c) du/dy = u V2/ (b-cb)
(d) du/dy
%3D
%3D
V2*(b-cb)
(е) попе оf the above
Question 15: [
What equation relates the velocity on the top plate (V2) to the velocity on the lower thin plate
(V1)?
(a) (V1/V2)=c/ (c+1)
(b) (V1/V2)=3c / (c+1)
(c) (Vi/V2)=2c / (c-1)
(V1/V2)=2c / (c+1)
er ()
(e) none of the above
Transcribed Image Text:For the bottom fluid 1, what equation relates the velocity gradient (du/dy) to the speed Vi of Question 13: the e bottom fluid 1, what equation relates the velocity gradient (du/dy) to the speed Vi of the thin plate? (a) du/dy = Vilcb (b) du/dy = u V1*cb (а) (c) du/dy = u Vilcb (d) du/dy V1*cb (е) попе оf the above Question 14: For Fluid 2, what equation relates the velocity gradient (du/dy) to the speed V2 of the top plate? (a) du/dy = V2 lb (b) du/dy = (V2- V1) / (b-cb) (c) du/dy = u V2/ (b-cb) (d) du/dy %3D %3D V2*(b-cb) (е) попе оf the above Question 15: [ What equation relates the velocity on the top plate (V2) to the velocity on the lower thin plate (V1)? (a) (V1/V2)=c/ (c+1) (b) (V1/V2)=3c / (c+1) (c) (Vi/V2)=2c / (c-1) (V1/V2)=2c / (c+1) er () (e) none of the above
Froblem III. Two flat plates are oriented parallel to and above a fixed lower-plate, as shown
im Figure III. The top thick-plate, located at a distance b above the fixed plate, is pulled along
with constant speed V2. The lower thin-plate is located at a distance cb above the fixed-plate,
where 0 <c <1. This plate moves with constant speed V1, which is determined by the viscous
shear forces imposed upon it. Fluid 2 above the thin-plate is twice as viscous as Fluid 1 below
it, which itself has a viscosity (u).
6,
thick-plate
V2
2 µ
Fluid 2
b
V1
thin-plate –
Fluid 1
cb
fixed-plate
Figure III
Question 11:
What equation relates the force (F) to the cross-sectional area (A) and shear stress (T) of the
top plate?
(a) F= T A?
(b) F = t | A
(C) F=Α/τ
(d F= t A
(e) none of the above
the
Question 12:4
What equation relates the shear stress on the upper surface of the thin plate (T top) to that on its
lower surface (T bottom )?
(а) Т ор
=2t bottom
(b) T top
=0.5T
%3D
bottom
T top
= T bottom
(d) T top = 2uT bottom
%3D
(e) none of the above
Transcribed Image Text:Froblem III. Two flat plates are oriented parallel to and above a fixed lower-plate, as shown im Figure III. The top thick-plate, located at a distance b above the fixed plate, is pulled along with constant speed V2. The lower thin-plate is located at a distance cb above the fixed-plate, where 0 <c <1. This plate moves with constant speed V1, which is determined by the viscous shear forces imposed upon it. Fluid 2 above the thin-plate is twice as viscous as Fluid 1 below it, which itself has a viscosity (u). 6, thick-plate V2 2 µ Fluid 2 b V1 thin-plate – Fluid 1 cb fixed-plate Figure III Question 11: What equation relates the force (F) to the cross-sectional area (A) and shear stress (T) of the top plate? (a) F= T A? (b) F = t | A (C) F=Α/τ (d F= t A (e) none of the above the Question 12:4 What equation relates the shear stress on the upper surface of the thin plate (T top) to that on its lower surface (T bottom )? (а) Т ор =2t bottom (b) T top =0.5T %3D bottom T top = T bottom (d) T top = 2uT bottom %3D (e) none of the above
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