Fox And Mcdonald's Introduction To Fluid Mechanics
9th Edition
ISBN: 9781118921876
Author: Pritchard, Philip J.; Leylegian, John C.; Bhaskaran, Rajesh
Publisher: WILEY
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Textbook Question
Chapter 10, Problem 74P
A jet-propelled aircraft traveling at 225 m/s takes in 50 kg/s of air. If the propulsive efficiency (defined as the ratio of the useful work output to the
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Compute the coordinates of the centroid (x, y) of the area
shown.
Hint: Use composite with shapes in the back of the book.
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2013 Michael Swanbom
CC)
BY NC SA
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C
к
ka
a -
b * c *
x
Values for dimensions on the figure are given in the following
table. Note the figure may not be to scale.
Variable Value
α
42 mm
b
17 mm
C
24 mm
d
78 mm
The x coordinate of the centroid is a =
mm.
The y coordinate of the centroid is y
mm.
=
Compute the coordinates of the centroid (x, y) of the area
shown.
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2013 Michael Swanbom
BY NC SA
不
a
W-
h
жин
Χ
kd
b
Values for dimensions on the figure are given in the following
table. Note the figure may not be to scale.
Variable Value
a
19 mm
b
106 mm
C
17 mm
d
51 mm
h
101 mm
ω
24 mm
The x coordinate of the centroid is x =
mm.
The y coordinate of the centroid is y
mm.
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Compute the coordinates of the centroid (x, y) of the area
shown.
y
y = a√bx
CC +
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BY NC SA
2016 Eric Davishahl
Values for dimensions on the figure are given in the following
table. Note the figure may not be to scale.
Variable Value
α
4.5 in
b
-1
1.6 in (Note the -1 exponent only applies to
the unit, not the number.)
с
6 in
The x coordinate of the centroid is a =
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The У
coordinate of the centroid is y =
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Chapter 10 Solutions
Fox And Mcdonald's Introduction To Fluid Mechanics
Ch. 10 - The geometry of a centrifugal water pump is r1 =...Ch. 10 - Find the resulting -groups when (a) D, , and Q or...Ch. 10 - Consider the centrifugal pump impeller dimensions...Ch. 10 - Dimensions of a centrifugal pump impeller areCh. 10 - Dimensions of a centrifugal pump impeller areCh. 10 - The blade is one of a series. Calculate the force...Ch. 10 - This blade is one of a series. What force is...Ch. 10 - A centrifugal water pump, with 15-cm-diameter...Ch. 10 - A centrifugal water pump designed to operate at...Ch. 10 - A series of blades, such as in Example 10.13,...
Ch. 10 - In passing through this blade system, the absolute...Ch. 10 - A centrifugal pump runs at 1750 rpm while pumping...Ch. 10 - A centrifugal water pump designed to operate at...Ch. 10 - Kerosene is pumped by a centrifugal pump. When the...Ch. 10 - In the water pump of Problem 10.8, the pump casing...Ch. 10 - Use data from Appendix C to choose points from the...Ch. 10 - Data from tests of a water suction pump operated...Ch. 10 - A centrifugal pump impeller having r1 = 50 mm, r2...Ch. 10 - A centrifugal pump impeller having dimensions and...Ch. 10 - An axial-flow fan operates in sea-level air at...Ch. 10 - Data measured during tests of a centrifugal pump...Ch. 10 - A small centrifugal pump, when tested at N = 2875...Ch. 10 - If the impeller of Problem 10.20 rotates between...Ch. 10 - At the outlet of a pump impeller of diameter 0.6 m...Ch. 10 - Typical performance curves for a centrifugal pump,...Ch. 10 - A pump with D = 500 mm delivers Q = 0.725 m3/s of...Ch. 10 - At its best efficiency point ( = 0.87), a...Ch. 10 - Using the performance curves in Appendix C, select...Ch. 10 - A pumping system must be specified for a lift...Ch. 10 - A centrifugal water pump operates at 1750 rpm; the...Ch. 10 - A set of eight 30-kW motor-pump units is used to...Ch. 10 - A blower has a rotor with 12-in. outside diameter...Ch. 10 - A centrifugal water pump has an impeller with an...Ch. 10 - Appendix C contains area bound curves for pump...Ch. 10 - Use data from Appendix C to verify the similarity...Ch. 10 - A centrifugal water pump has an impeller with...Ch. 10 - Catalog data for a centrifugal water pump at...Ch. 10 - A 1/3 scale model of a centrifugal water pump...Ch. 10 - Sometimes the variation of water viscosity with...Ch. 10 - A large deep fryer at a snack-food plant contains...Ch. 10 - Data from tests of a pump, with a...Ch. 10 - A four-stage boiler feed pump has suction and...Ch. 10 - A centrifugal pump operating at N = 2265 rpm lifts...Ch. 10 - A centrifugal pump is installed in a piping system...Ch. 10 - Part of the water supply for the South Rim of...Ch. 10 - Consider the flow system shown in Problem 8.94....Ch. 10 - Afire nozzle is supplied through 300 ft of...Ch. 10 - Performance data for a centrifugal fan of 3-ft...Ch. 10 - The performance data of Problem 10.57 are for a...Ch. 10 - Experimental test data for an aircraft engine fuel...Ch. 10 - Preliminary calculations for a hydroelectric power...Ch. 10 - Conditions at the inlet to the nozzle of a Pelton...Ch. 10 - A Francis turbine is to operate under a head of 46...Ch. 10 - A Kaplan (propeller with variable-pitch blades)...Ch. 10 - Francis turbine Units 19, 20, and 21, installed at...Ch. 10 - Measured data for performance of the reaction...Ch. 10 - For a flow rate of 12 L/s and turbine speed of 65...Ch. 10 - The velocity of the water jet driving this impulse...Ch. 10 - An impulse turbine is to develop 15 MW from a...Ch. 10 - An impulse turbine under a net head of 33 ft was...Ch. 10 - The absolute velocities and directions of the jets...Ch. 10 - A fanboat in the Florida Everglades is powered by...Ch. 10 - A jet-propelled aircraft traveling at 225 m/s...Ch. 10 - When an air jet of 1-in.-diameter strikes a series...Ch. 10 - The volume flow rate through the propeller of an...Ch. 10 - A typical American multi blade farm windmill has D...Ch. 10 - An airplane flies at 200 km/h through still air of...Ch. 10 - This ducted propeller unit drives a ship through...Ch. 10 - A model of an American multi blade farm windmill...Ch. 10 - A large Darrieus vertical axis wind turbine was...Ch. 10 - Show that this ducted propeller system when moving...Ch. 10 - This ducted propeller unit (now operating as a...Ch. 10 - What is the maximum power that can be expected...Ch. 10 - If an ideal windmill is operating at best...Ch. 10 - A prototype air compressor with a compression...Ch. 10 - Prob. 89PCh. 10 - We have seen many examples in Chapter 7 of...
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- A sign ABCD is constructed from 5 mm thick plate steel (density p =8000 kg/m³) with the geometry shown in the figure. The sign is connected to the wall by a pin at A and also supported by member DE. Support member DE is also constructed from 5 mm thick plate steel and is connected by pins at B and E respectively. Determine the reaction forces at A and E. Enter your answers in Cartesian components. The weights of both the sign D and member DE should be accounted for in the calculation. Assume the pins cm away from the ends at each are located a distance ข ADV connection. W W E cc 10 BY NC SA 2016 Eric Davishahl 2 B C D W -b- h Values for dimensions on the figure are given in the following table. Note the figure may not be to scale. Variable Value a 2.4 m b 2.88 m с 1.2 m h 1.152 m พ 7 cm The reaction at A is A The reaction at E is E = ît Ĵ N. i+ ĴN.arrow_forwardс Compute the coordinates of the centroid (x, y) of the area shown. Also compute the area moment of intertia about the x' and y' axes with origin at the centroid. ул 2013 Michael Swanbom cc 10 BY NC SA + a * ьжа त्र x Values for dimensions on the figure are given in the following table. Note the figure may not be to scale. Variable Value a 44 cm b 18 cm 75 cm C The coordinate of the centroid is = cm. The У coordinate of the centroid is y = cm.arrow_forwardFind the tension in each segment. 7 ft B 4 ft 50lb 4 ft 5 ft 3 ft 100 lb D Fbc = 47 #, Fba = 83 #, Fcd = 88 # Fbc = 40 #, Fba = 50 #, Fcd = 33 # Fbc = 27 #, Fba = 68 #, Fcd = 18 # ☐ none of the abovearrow_forward
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