Statics
E MCH 211
Fall 2010
Instructor:
Dr. Craig Stringer
E-mail:
cjs206@psu.edu
Office:
110H DEF Building
Phone: 814.375.4732
Fax: 814.375.4784
Office Hours: 11:00 to noon MWF or by appointment
Class time:
MWF 10-10:50 204 DEF Building
Required Text:
 Engineering Mechanics: Statics and Dynamics 12th Ed. (2010)
R.C. Hibbeler, Prentice Hall IRC
(ISBN: 9780138149291)
Required Equipment:
 Scientific Calculator
Prerequisite or Concurrent: MATH 141
Course Objective
Provide students with the tools and guidance to allow them to master the use of equilibrium
equations and free body diagrams (FBDs) to solve real engineering problems. Students shall
develop the ability to logically approach a variety of statics engineering problems, translate a
physical situation into an analytical model, and use various mathematical tools to solve for
desired information. Students shall demonstrate an understanding of the concept of forces,
moments and their algebra and learn to:
 Isolate a body and create its Free Body Diagram (FBD).
 Utilize the FBD and the equations of equilibrium to solve for unknown forces and
moments.
 Identify problems of static and dynamic friction, belt friction concept; apply friction
concepts to solve pending motion, and steady state motion problems.
 Utilize differential masses, the concepts of equivalent systems, and integration to
determine centers of gravity (CG) and/or centers of mass (CM), as well as moments of
inertia.
Stringer E MCH 211 Fall 2010
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Course Goals
By the end of this course, a student should be able to:
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To relate forces and moments to the motion of bodies by focusing on the theory
and application of Newton’s 1st law of interia.
Understand the concepts of force, moment, and motion
Draw a free body diagram of 2D and 3D forces acting on a body
Academic Integrity
The Pennsylvania State University's Code of Conduct states that all students should act with
personal integrity, respect other students' dignity, rights and property, and help create and
maintain an environment in which all can succeed through the fruits of their efforts. Academic
integrity includes a commitment not to engage in or tolerate acts of falsification,
misrepresentation or deception. Such acts of dishonesty include cheating or copying,
plagiarizing, submitting another person’s work as one’s own, using internet sources without
citations, fabricating field data or citations, “ghosting” (taking or having another student take an
exam), stealing examinations, tampering with the academic work of another student, facilitating
other student’s acts of academic dishonesty, etc.
Such acts of dishonesty violate the fundamental ethical principles of the University community
and compromise the worth of work completed by others. Students charged with a breach of
academic integrity will receive due process and, if the charge is found valid, academic sanctions
may range, depending on the severity of the offense, from a grade of F for the assignment to a
grade of F for the course.
The University’s statement on academic integrity, from which the above statement is drawn, is
available at http://www.psu.edu/dept/oue/aappm/G-9.html
E MCH 211 Class Policies
The following are some ground rules to help the class progress through the semester:
1. Attendance is mandatory for all class periods. A significant amount of material is covered each class period.
You need to be present to learn the material and contribute to your team’s success. Your grade will be lowered
one letter grade for each 3 unexcused absences. It is your responsibility to notify the instructor of an excused
absence (illness, injury, Penn State athletics, etc) before class begins. Please email me (cjs206@psu.edu) before
class begins if you are not able to attend class.
2. If you have an excused absence that results in missing a test or other assignment, you must discuss this with the
instructor prior to the absence.
Stringer E MCH 211 Fall 2010
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3. Assignments turned in late will be graded out of 80%. For every week beyond the due date, the grade will be
docked an additional 20%. All assignments will be graded so please turn in assignments even if it is late, it will
only help your grade.
4. This syllabus is a tentative schedule of the course. All announcements made in the class time supersede the
syllabus. It is your responsibility to ensure you have the proper lecture materials and assignments for class time
missed.
5. Instructor will follow the guidelines set for by the university in its Policies and Rules regarding academic
dishonesty, grading, and administration of exams. (See the university’s statement on academic integrity)
6. Cell phones are to be turned off or in silent mode during class. Talking, texting or emailing via a mobile
device during class will not be tolerated and your grade will be lowered one letter grade for every 5
instances. Cell phones are to be used only in emergency cases during class.
Grading Policy
Grades will be determined based on performance of the activities listed below and in accordance
with the class policies. Final grades will be based on the following grading scale:
100-94%
93-90%
89-87%
A
AB+
86-83%
83-80%
79-77%
B
BC+
76-70%
69-60%
<59%
C
D
F
Course Grades
Homework
Quizzes
3 In-class exams (15% each)
Final exam (comprehensive)
Class participation/ attendance
Totals:
15%
10%
45%
25%
5%
Note to Students with Disabilities
Penn State DuBois welcomes students with disabilities in the universities’ educational programs.
If you have a disability-related need for modifications and/or reasonable accommodations in this
course, please let the instructor know and contact Diana Kreydt at the office for Disability
Services, 110G DEF Building or at (814) 372-3037.
For further information regarding the Office for Disability Services, visit their website at
www.equity.psu.edu/ods Instructors should be notified as early as possible in the semester
regarding the need for modification and/or reasonable accommodations.
Stringer E MCH 211 Fall 2010
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Fall 2010 E MCH 211 Tentative Schedule
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

Schedule is subject to change; please keep alert for announcements made in class.
Unless otherwise stated, homework is due at the beginning of class.
Readings should be completed before coming to class on the assigned days.
M
W
F
M
W
F
M
W
F
M
W
F
M
W
F
M
W
F
M
W
F
M
W
F
M
W
F
Date
8/23
8/25
8/27
8/30
9/01
9/03
9/06
9/08
9/10
9/13
9/15
9/17
9/20
9/22
9/24
9/27
9/29
10/01
10/04
10/06
10/08
10/11
10/13
10/15
10/18
10/20
10/22
Topic
Introduction and General Principles
Vectors and Forces
Vectors in Rectangular coordinate system
Force vectors and Dot products
Equilibrium of particles
Free body diagram
Labor Day NO CLASS
Coplanar for systems
Three dimensional force systems
Moment of a force and cross product
Principles of moments
Moment of a couple
Simplification of force and couple systems
Rigid body equilibrium
Equation of equilibrium
EXAM I
Free body diagrams
Constraints and statical determinacy
Simple Trusses
Method of joints
Method of sections
Space trusses, frames and machines
Internal forces
Shear and moment equations
Shear and moment diagrams
Distributed load, shear, and moments
Dry Friction
M
W
F
M
W
F
M
W
F
M
W
F
M
W
10/25
10/27
10/29
11/01
11/03
11/05
11/08
11/10
11/12
11/15
11/17
11/19
11/22
11/24
Wedges
EXAM II
screws
Flat belts
Collar, pivot bearings, and disks
Journal bearings and rolling resistance
Center of gravity, center of mass, centroid
Composite bodies
General distributed loading
Fluid pressure
Area moment of inertia
Moment of inertia for composite areas
Thanksgiving Holiday NO CLASS
Thanksgiving Holiday NO CLASS
Stringer E MCH 211 Fall 2010
Reading
1.1-1.4
1.5-2.2
2.3-2.6
2.7-2.9
3.1
3.2
3.3
3.4
4.1-4.2
4.3-4.5
4.6-4.7
4.8-4.9
5.1-5.2
5.3-5.4
Covers chapters 1-4.9
5.5-5.6
5.7
6.1-6.2
6.2-6.3
6.4
6.5-6.6
7.1
7.2
7.2
7.3-7.4
8.1-8.2
8.2-8.3
Covers chapters 5,6 and 7
8.4
8.5
8.6
8.7-8.8
9.1
9.2
9.3-9.4
9.5
10.1-10.2
10.3-10.4
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F 11/26
M 11/29
W 12/01
F 12/03
M 12/06
W 12/08
F 12/10
Final Exam
week
Thanksgiving Holiday NO CLASS
Product of moment of inertia
EXAM III
Mohrs circle and mass moment of inertia
Principles of virtual work
Systems of connected rigid bodies
Conservation forces and potential energy
Final Exam (comprehensive but focus on Chapters 910)
Stringer E MCH 211 Fall 2010
10.5-10.6
Covers chapters 8,9
10.5-10.6
11.1-11.2
11.3-11.4
11.5-11.7
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