Assignment 5
EGR 202
Engineering Thermodynamics
University of Dayton
1. (10 points) Two kilograms of water at 25C are placed in a piston cylinder device under 3.2 MPa
pressure as shown in the diagram (State (1). Heat is added to the water at constant pres
Assignment 1 - SOLUTIONS
EGR 202
Engineering Thermodynamics
University of Dayton
1. Convert the following: (10 pts.)
a.
b.
c.
d.
e.
1 L to in.3
650 J to Btu
150 kPa to bar
10C to F
1000 kW to Btu/hr
f.
g.
h.
i.
j.
1 kW to hp
37C to K
a T of 10C to F
1 km
Assignment 3 - SOLUTIONS
EGR 202
Engineering Thermodynamics
University of Dayton
1. Fill in the missing information for H2O:
Two-phase fluid or saturated liquid-vapor
2. Fill in the missing information for R134a:
Two-phase fluid or saturated liquid-vapor
Assignment 2 - SOLUTIONS
EGR 202
Engineering Thermodynamics
University of Dayton
Assignment 2 - SOLUTIONS
EGR 202
Engineering Thermodynamics
University of Dayton
Assignment 2 - SOLUTIONS
EGR 202
Engineering Thermodynamics
University of Dayton
An electric
Distributed Loads
Distributed Loads
?
?
?
?
In many static problems, applied loads are given as distributed force loads, a
force applied across a length or area instead of at one point.
The most common type of distributed loading encountered in engineeri
Cartesian Vectors
Addition of Cartesian Vectors
The addition (or subtraction) of two or
more vectors is greatly simplified if the
vectors are expressed in terms of their
Cartesian components.
A Ax i Ay j Az k
B Bx i B y j Bz k
R A B Ax Bx i Ay B y j Az
Rectangular Components of a Force
Rectangular Components of a Force
y
F
Fy
q
Fx
x
When a force is resolved into two components along the x and y axes, the
components are then called rectangular components .
The rectangular components of force F are found
Moment of a Force
Moment of a Force
M o Fd Fd sin
M o Fd
Mo 0
The moment of a force is a measure of its tendency to cause a body to rotate
about a specific point or axis, this measure involve the magnitude of the force and
its distant from the specific
Equilibrium of Two & Three Force Bodies
Equations of Equilibrium
A body is subjected to a system of forces that lie in the x-y plane. When in
equilibrium, the net force and net moment acting on the body are zero.
F
x
0
F
y
0
M
O
0
where point O is any ar
Equilibrium of A Rigid Body in 3-D
Applications
The sign has a mass of 100 kg with center of mass at G . Determine the reaction at
the ball and-socket joint A and the tension in wires BC and BD .
Steps for Solving Rigid Body Equilibrium Problem in 3-D
1.
Equilibrium of A Rigid Body
Steps for Solving Rigid Body Equilibrium Problem in 2D
1. If not given, establish a suitable x - y coordinate system.
2. Draw a free-body diagram (FBD) of the object under analysis.
3. Apply the three equations of equilibrium (
Engineering Mechanics
General Principles
Course Requirements
Required Texts: Hibbeler, R.C.; Engineering Mechanics Statics, 14th ed., Pearson,
2016. Available at the UD bookstore.
The Mastering Engineering Course ID for EGR 201-02/H1 is (MESAWAS99592).
Force Vectors
Typical Problem of Statics
Determine the tension in cables AB , BC , and CD , necessary to support the 15-kg
traffic lights at B and C.
Concept to be use : Newton's first law (If the resultant of force acting on the
particle is zero, then t
Simplification of a Force and Couple System
Simplification of a Force and Couple System
Sometimes it is convenient to reduce a system of forces and couple moments
acting on a body to a simpler form by replacing it with an equivalent system ,
consisting o
Equilibrium of A Rigid Body
Equilibrium of a Particle
y
TAC
.
TAB
30o
x
850 lb
Free-body diagram (FBD)
Fx 0
TAB TAC cos 30o 0
Fy 0
TAC sin 30o 800 0
TAC 1600 lb
TAB 1386 lb
An 850 lb engine is supported by chains, determine the force acting in each of
Equilibrium of Particles in 3D
Three-Dimensional Force Systems
In the case of a three-dimensional force system, we can resolve the forces into
their respective i , j , k components, so that
F 0
Fx i Fy j Fz k 0
For this vector equation to be satisfied,
Moment of a Couple
Moment of a Couple
Two forces F and -F having the same magnitude, parallel lines of action, and
opposite sense are said to form a couple.
The net external effect of a couple:
The net force equals zero.
Only a net couple moment.
Moment
Moment of a Force
Cross Product of Two Vectors
Concept of the moment of a force about a point is more easily understood through
applications of the vector product or cross product.
C AB sin uC
C AB sin
The cross product of two vectors A and B yields th
Moment of a Force about a Specified Axis
Moment of a Force about a Specified Axis
Often, the moment produced by a force about a specified axis must be determined.
What is the turning effect of force F about AB?
Only the projection of the moment about AB
Dot Product of Two Vectors
Dot Product of Two Vectors
A
B
The scalar product or dot product of two vectors A and B is defined as:
A B A B cos
Dot Product of Two Vectors
Dot products with Cartesian unit components,
A B Ax i Ay j Az k Bx i B y j Bz k
Cardboard Table Project
Joseph Charbel, Liam Herrera, and Dan Pearson
What Was Designed?
Design Selection
Each teammate designed a
cardboard end
table/nightstand.
A design matrix was then
used to determine the
design to proceed with.
Joes design held t
Liam Herrera
Ms. Hart
Engineering Innovation
16 October 2016
Tracy Miller Reflection
My highest trait was cautious and analytical by 10 points. This sounds like and an accurate
description of me because I see myself as someone that enjoys being organized
Liam Herrera
September 9 2016
Engineering Innovation 103
Mrs. Hart
How Diversity Makes Us Smarter Reflection
This passage made me realize the importance of diversity when working in teams for
engineering projects or any other projects not related to engin
Liam Herrera
9/19/16
Engineering Innovation
Elizabeth Hart
Introduction
The original problem was to make an easy to assemble piece of furniture. After researching
about an earthquake that hit Italy a few weeks ago, research was conducted to determine what
Homework Assignment #2 - READING ASSIGNMENT #1
Due: September 1, 2016
Read Ch. 1, 2, 3 & 15 and then answer the following:
1. What are the three roles or parties involved in a design effort? (3 pts.)
2. Fill in the blanks with the appropriate word (2 pts.
Liam Herrera
Engineering Innovation 103
11/8/16
Ch. 10 and Appendix A1-A5 homework
1. A prototype is a working model of the design and should be fully functional. The prototype will
be tested in the same conditions the final design is meant to operate in.
Lab 4: Using Pulse Width Modulation to Control the Brightness of an LED
Introduction to Lab 4: Presentation by Instructor
Your instructor will introduce the hardware and software that will be used for this lab.
A. Software Check for National Instruments m