Foundations of Materials Science and Engineering
6th Edition
ISBN: 9781259696558
Author: SMITH
Publisher: MCG
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Chapter 1.9, Problem 36SEP
Why is it important or helpful to classify materials into different groups as we have done in this chapter?
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The external loads on the element shown below at the free end are F = 1.75 kN, P = 9.0
kN, and T = 72 Nm.
The tube's outer diameter is 50 mm and the inner diameter is 45 mm.
Given: A(the cross-sectional area) is 3.73 cm², Moment inertial I is 10.55 cm4, and J
polar moment inertial is 21.1 cm4.
Determine the following.
(1) The critical element(s) of the bar.
(2) Show the state of stress on a stress element for each critical element.
-120 mm-
F
A crate weighs 530 lb and is hung by three ropes attached to
a steel ring at A such that the top surface is parallel to the
xy plane. Point A is located at a height of h = 42 in above
the top of the crate directly over the geometric center of the
top surface. Use the dimensions given in the table below to
determine the tension in each of the three ropes.
2013 Michael Swanbom
↑ Z
C
BY NC SA
b
x
B
у
D
Values for dimensions on the figure are given in the following
table. Note the figure may not be to scale.
Variable Value
a
30 in
b
43 in
с
4.5 in
The tension in rope AB is
lb
The tension in rope AC is
lb
The tension in rope AD is
lb
The airplane weighs 144100 lbs and flies at constant speed
and trajectory given by 0 on the figure. The plane
experiences a drag force of 73620 lbs.
a.) If = 11.3°, determine the thrust and lift forces
required to maintain this speed and trajectory.
b.) Next consider the case where is unknown, but it is
known that the lift force is equal to 7.8 times the quantity
(Fthrust Fdrag). Compute the resulting trajectory angle
-
and the lift force in this case. Use the same values for the
weight and drag forces as you used for part a.
Уллу
Fdrag
10.
Ө
Fthrust
cc 10
2013 Michael Swanbom
BY NC SA
Flift
Fweight
The lift force acts in the y' direction. The weight acts in the
negative y direction. The thrust and drag forces act in the
positive and negative x' directions respectively.
Part (a)
The thrust force is equal to
lbs.
The lift force is equal to
Part (b)
The trajectory angle is equal to
deg.
The lift force is equal to
lbs.
lbs.
Chapter 1 Solutions
Foundations of Materials Science and Engineering
Ch. 1.9 - What are materials? List eight commonly...Ch. 1.9 - What are the main classes of engineering...Ch. 1.9 - What are some of the important properties of each...Ch. 1.9 - Define a composite material. Give an example of a...Ch. 1.9 - Provide a list of characteristics for structural...Ch. 1.9 - Define smart materials. Give an example of such...Ch. 1.9 - Prob. 7KCPCh. 1.9 - Prob. 8KCPCh. 1.9 - Nickel-base superalloys are used in the structure...Ch. 1.9 - Make a list of items that you find in your kitchen...
Ch. 1.9 - Make a list of all the major components of your...Ch. 1.9 - Make a list of major components in your automobile...Ch. 1.9 - Make a list of major components in your computer...Ch. 1.9 - Make a list of major components in your classroom...Ch. 1.9 - Perform a search on the history of automobiles and...Ch. 1.9 - Perform a search on the history of wheels and...Ch. 1.9 - Perform a search on the history of recording media...Ch. 1.9 - Perform a search on the history of sport track...Ch. 1.9 - List some materials usage changes that you have...Ch. 1.9 - (a) What kind of material is OFHC copper? (b) What...Ch. 1.9 - (a) To which class of materials does PTFE belong?...Ch. 1.9 - Why should civil engineers be knowledgeable about...Ch. 1.9 - Why should mechanical engineers be knowledgeable...Ch. 1.9 - Why should chemical engineers be knowledgeable...Ch. 1.9 - Why should ocean engineers be knowledgeable about...Ch. 1.9 - Why should petroleum engineers be knowledgeable...Ch. 1.9 - Why should electrical engineers be knowledgeable...Ch. 1.9 - Why should biomedical engineers be knowledgeable...Ch. 1.9 - (a) To which class of materials does kevlar...Ch. 1.9 - Prob. 30AAPCh. 1.9 - Prob. 31AAPCh. 1.9 - What factors might cause materials usage...Ch. 1.9 - Consider the common household component in a...Ch. 1.9 - (a) Name the important factors in selecting...Ch. 1.9 - (a) Name the important criteria for selecting...Ch. 1.9 - Why is it important or helpful to classify...Ch. 1.9 - A certain application requires a material that...Ch. 1.9 - Give as many examples as you can on how materials...Ch. 1.9 - When selecting materials to be used inside the...Ch. 1.9 - In the sport of tennis, for optimal performance,...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- The hoist consists of a single rope and an arrangement of frictionless pulleys as shown. If the angle 0 = 59°, determine the force that must be applied to the rope, Frope, to lift a load of 4.4 kN. The three-pulley and hook assembly at the center of the system has a mass of 22.5 kg with a center of mass that lies on the line of action of the force applied to the hook. e ΘΕ B CC 10 BY NC SA 2013 Michael Swanbom Fhook Note the figure may not be to scale. Frope = KN HO Fropearrow_forwardDetermine the tension developed in cables AB and AC and the force developed along strut AD for equilibrium of the 400-lb crate. x. 5.5 ft C 2 ft Z 2 ft D 6 ft B 4 ft A 2.5 ftarrow_forwardA block of mass m hangs from the end of bar AB that is 7.2 meters long and connected to the wall in the xz plane. The bar is supported at A by a ball joint such that it carries only a compressive force along its axis. The bar is supported at end B by cables BD and BC that connect to the xz plane at points C and D respectively with coordinates given in the figure. Cable BD is elastic and can be modeled as a linear spring with a spring constant k = 400 N/m and unstretched length of 6.34 meters. Determine the mass m, the compressive force in beam AB and the tension force in cable BC. Z D (c, 0, d) C (a, 0, b), A e B y f m BY NC SA x 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 a 8.1 m b 3.3 m C 2.7 m d 3.9 m e 2 m f 5.4 m The mass of the block is The compressive force in bar AB is The tension in cable S is N. kg.arrow_forward
- Two squirrels are sitting on the rope as shown. The squirrel at A has a weight of 1.2 lb. The squirrel at B found less food this season and has a weight of 0.8 lb. The angles 0 and > are equal to 50° and 60° respectively. Determine the tension force in each of the rope segments (T₁ in segment, T₂ in segment Я, and T3 in segment DD) as well as the angle a in degrees. Ө A α B Note the figure may not be to scale. T₁ = lb lb T2 T3 = = lb απ deg A BY NC SA 2013 Michael Swanbomarrow_forwardEach cord can sustain a maximum tension of 500 N. Determine the largest mass of pipe that can be supported. B 60° A E Harrow_forward2. Link BD consists of a single bar 1 in. wide and 0.5 in. thick. Knowing that each pin has a in. diameter, determine (a) the maximum value of the normal stress in link BD and the bearing stress in link BD if 0 = 0, (b) the maximum value of the normal stress in link BD if 0 = 90. -6 in.- 12 in. 30° D 4 kipsarrow_forward
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