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EBK FLUID MECHANICS
2nd Edition
ISBN: 9780134626055
Author: HIBBELER
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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Question
Chapter 11, Problem 30P
To determine
The displacement thickness as a function of x and Re.
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Students have asked these similar questions
Calculate the Moment About the Point A
-20"-
5 lb
40 N
D
1.5 m
40 N
4.5 m
A
15 lb.
150 mm
52 N
5
12
100 mm
15 lb.
26 lb.
12
5
34 lb.
13
8
15
77777
36 lb.
Formala for Hunzontal component= + cos &
Vertical Component: Fsin t
Find the vertical and horizontal components for the figure bellow:
30°
200 N
77
200 cos 30 = 173 N
//
200 sin 30 = 100 N
YA
a₂+b₂
b₂
(b₁,b₂)
a+b
20haits
(a+b₁,a+b) Magnitude a and b
a = lbl = 2o unite
rugle of vector a wt Horisontal Axis = 30
11 vector & wt Honzontal Axis - 60°
b
b
a= |a|
Cas 30
a2
(a1, a2)
ag = 10
bx = /b/ cos
a
1
20 cos 80 = 17.32
Sia 30 = 20 sin 30.
60
= 10
= 20 Cos 60 = It
by = 161 sin 60 = 20 sia 60 = 17.32
b₁
Rx
ax +bx = 17.32 +10=2732
a₁
a₁+b₁
X
By = ou + by=
+
+ by = 10 + 17.32 =27.32
Magnitude
=
38.637
Find the Vector a +b
the Resultans
The angle of the vector with the horizontal axle is 30 degrees while the angle of the
vector b is 60 degrees.
The magnitude of both vectors is 20 (units)
angle of the Resultant vector
=
tam- " (14)
45
The net force exerted on the piston by the exploding fuel-air mixture
and friction is 5 kN to the left. A clockwise couple M = 200 N-m acts on the crank AB.
The moment of inertia of the crank about A is 0.0003 kg-m2
. The mass of the
connecting rod BC is 0.36 kg, and its center of mass is 40 mm from B on the line from B
to C. The connecting rod’s moment of inertia about its center of mass is 0.0004 kg-m2
.
The mass of the piston is 4.6 kg. The crank AB has a counterclockwise angular velocity
of 2000 rpm at the instant shown. Neglect the gravitational forces on the crank,
connecting rod, and piston – they still have mass, just don’t include weight on the FBDs.
What is the piston’s acceleration?
Chapter 11 Solutions
EBK FLUID MECHANICS
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