EM
221-(201
1. LECTURES:
2.
3. OFFICE HOURS: M. T. Hanson 12:30-2:00 MWF, 10:00-12:00 T Th (eastern time)
4. CLASS WEB
SITE: http://www.engr.uky.edu/statics
5. EMAIL: hanson@engr.uky.edu
6. TELEPHONE: Hanson (859-257-6336 ext. 80667)
7. TEXT: Engineering Mechanics - Statics, Sixth Edition, 2007, by Meriam and Kraige
8. COURSE DESCRIPTION:
Vector algebra; study of the forces on bodies at rest; study of force systems;
equivalent force systems; distributed forces; internal forces; principles of
equilibrium; application to trusses, frames and beams; friction.
9. Concepts to be
introduced to students:
Vector components and vector operations
Position vector, force vector and resultant
Rectangular components and direction cosines
Dot and Cross Product
Moment of a force and couple
Distributed loading and equivalent force systems
Free Body Diagrams,
Beams, trusses and frames
Internal forces, shear force and bending moment diagrams
Friction
Center of gravity and centroids, moment of inertia
10. It is expected
that students will develop the ability to:
1. Perform necessary vector operations
2. Identify and draw appropriate free body diagrams
3. Determine moment of a force about a point or line and moment of a couple
4. Write appropriate equilibrium equations and solve for unknowns
5. Determine resultants of force-couple systems and distributed loadings
6. Analyze (as a whole or in separate pieces) truss and frame structures
7. Identify and calculate internal forces in structural members
8. Draw shear force and bending moment diagrams
9. Solve problems involving dry friction
10. Determine first moments of area and volume
11. Locate center of gravity and centroid of a body
12. Determine second moment of area and moment of inertia for an area
11. PREREQUISITES AND REGULATIONS:
In order to be enrolled in EM 221 a student must have passed or be currently enrolled in MA 213
In order to be enrolled in EM 221 a student must
1. Have passed MATH 126
2. Currently enrolled in MATH 227, PHYS 250
12. GRADING:
Homework 14%
Quizzes (8) 16%
Tests (3) 45%
Final Exam 25%
Lower cut-offs for letter grades (A, B, C, D) will be (90, 80, 70, 60). These
cutoffs may be slightly lowered if, in the instructor's opinion, the grades are too
low. Also
a grade of zero will be given for all
unexcused absences from
quizzes and tests and for homework not turned in on time.
Homework will be assigned in class most days, except on days scheduled for
tests. Assignments are due in class at the beginning of the next meeting or as
stated
otherwise with the assignment. Late homework will not be accepted. Copying
of homework is considered cheating and subject to a failing grade in the
class.
Quizzes will consist of one problem (equivalent to a homework problem) and will be given the last 10-15 minutes of class. Tentative dates are shown below on the schedule. However these may be shifted if we are ahead or behind schedule. This will be announced in class. See course web page for past quiz examples.
Tests
will generally consist of four problems (equivalent to homework problems) and
will be given the entire class.
Tentative dates are shown below on the schedule. However these may be shifted if we are ahead
or behind schedule. This will be
announced in class. See course web page
for past test examples.
In order to receive full credit: all answers must have the proper
units and vector notation must be shown in order to distinguish vectors from
scalars.
13. DROP DATES:
Friday April 3 - last day to withdraw from a course with a “W”
WKU Monday February 2 - last day to drop a full semester course without a grade
Friday March 20 - last day to withdraw from a full semester course with a “W”
14. RULES OF CONDUCT
Student
conduct
Cheating and/or plagiarism on graded materials will not be tolerated and will be
prosecuted to the maximum according to each universities established procedures.
See class web page for further
information per
Any student found cheating will receive a failing grade on that assignment and may further result
in a failing grade for the course.
Only a pencil, eraser and conventional calculator will be allowed for in class quizzes and tests.
Cell phones, PDA’s and other electronic items are expressly forbidden.
Classroom attendance
Attendance is expected and absences are excused according to the established policies for
each university. Acceptable reasons are typically
1. Serious illness
2. Illness or death of a family member
3. University related trips
4. Other reasons found to be “reasonable” by the instructor
Classroom
and Learning Accommodations
Students at WKU should follow the WKU procedure in this regard.
15. STUDENT
INTERACTION
Students may interact and communicate with the instructor is several different ways
1. Email correspondence and/or via telephone
2. Asking questions before/during/after class
3. Personal meeting when instructor visits WKU campus
All interactions are expected to be conducted in a professional manner. Answers to
email questions will be sent to the originating email address. The instructor will
respond to emails in a timely manner after the email has been received. Emails later in
the afternoon or evening may or may not be responded to since the instructor may not
check email every evening.
16. TECHNICAL SUPPORT
If students experience any difficulty with delivery or course material in the classroom
contact the ITV support personnel at the location or inform the instructor.
Class Day Date Topics
1 M 26 Vectors & Vector Addition
(1/1-1/9)
2 W 28 Vectors & Vector Addition
(1/1-1/9)
3
F 30 2-D Forces (2/1-2/3)
4
M February 2 Moments (2/4)
5
W 4 Moments (2/4) Q1
6
F 6 Couples (2/5)
7
M 9 Resultants (2/6)
8 W 11 Review Q2
9 F 13 Test #1
10
M 16 3-D Forces (2/7)
11 W 18 Moment and Couple (2/8)
12
F 20 Resultants (2/9)
13 M 23 2-D Equilibrium (3/1-3/3)
14 W 25 2-D Equilibrium (3/1-3/3) Q3
15 F 27 3-D Equilibrium (3/4)
16 M March 2 3-D Equilibrium (3/4)
17 W 4 Review Q4
18 F 6
Test #2
WKU Spring Break –
19 M 9 Truss – Method of Joints
(4/1-4/3)
20 W 11 Truss – Method of Sections
(4/4)
21 F 13 Frames and Machines (4/6)
19 M 16 Truss – Method of Joints
(4/1-4/3)
20 W 18 Truss – Method of Sections
(4/4)
21 F 20 Frames and Machines (4/6)
22
M 23 Frames and Machines (4/6)
23
W 25 Centroids
(5/1-5/3)
24
F 27 Centroids
(5/1-5/3) Q5
25
M 30 Centroids
(5/1-5/3)
26
W April 1 Centroid –
Composite Body (5/4)
27
F 3 Centroid –
Composite Body (5/4)
28
M 6 Dist. Loads on Beams (5/6)
29 W 8 Review Q6
30
F 10 Test
#3
31 M 13 Shear and Moment (5/7)
32 W 15 Shear and Moment (5/7)
33 F 17 Shear and Moment (5/7)
34 M 20 Shear and Moment (5/7)
35 W 22 Shear and Moment (5/7) Q7
36 F 24 Moment of Inertia (A/1-A/2)
37 M 27 Composite Area (A/3)
38
W 29 Composite Area (A/3)
39
F May 1 Review Q8
Final Exams:
WKU
T May 12 Final
Exam (8:00-10:00 Central
Time)