PHYSCS 280: Engineering Mechanics - Statics

Fall 1997

Instructor:Dr. Russell Helwig Office hours:
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Office:120 Upham Hall 9:55 am - 10:45 am
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Phone:(414) 472-5115 11:00 am - 11:50 am
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email:helwigr@uwwvax.uww.edu 1:10 pm - 2:00 pm
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3:20 pm - 4:10 pm
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By appointment
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Required texts:R. C. Hibbeler, Engineering Mechanics, Seventh Edition, Prentice Hall, 1995

Course Description: A study of forces on rigid bodies in equilibrium. Topics include force systems, equilibrium, distributed forces, structures, friction, internal forces, centroids and moments of inertia. Knowledge of these topics is basic to mechanical design encountered in engineering; especially in the areas of mechanical engineering, civil engineering, and materials science.

Grading policy: Two regular exams and one final exam are scheduled for this course. In addition, homework for each chapter will be due at the beginning of the second class period after completion of lecture on that chapter. Please put your name on the outside of each homework assignment and place it on the lecture table at the beginning of the class period it is due. Note that nearly all assigned problems have answers at the end of the text. Even though answers with proper units are required, no credit will be given for just the answer without supporting work. Each problem completed will be given one point of credit. If homework is late, 3 points will be subtracted from the score if not handed in by the due time, and no credit will be given if the work is not handed in by the beginning of the class period following the due date. Answers to the homework problems will be posted after all assignments are handed in. Makeup exams will be given only for legitimately excused absences, otherwise a score of zero will be given.

Grade Breakdown
Assignment
Weight
Midterm exams
50%
Final exam
25%
Homework
25%

Suggestions: The accompanying assignments are a guide to help pace your studies in this course. Read the text, study the examples, and review often. You should attempt working ahead of the schedule so that you can get help if needed. Feel free to come to any office hour for assistance. If your schedule is not free during an office hour, please make an appointment for another time. Budget your time to work on assignments every day. It may be helpful to form a study group with other class members. Study groups usually meet once or twice a week to review class material and to discuss problems. Working together is encouraged; however; be sure the work you hand in is your own. You are expected to perform to the utmost of our ability in an honest and sincere manner. Cheating, plagiarism, the use of unauthorized materials or any other form of academic misconduct will result in a severe penalty as permitted in UWS Chapter 14.

Tutorial: A computer tutorial is available for this course. Please become familiar with it at the beginning of the semester. The tutorial may be used on any computer using MS-DOS or a compatible operating system. You will be responsible for your copy. It should not be copied and must be returned at the end of the semester. If a copy of the program is not furnished with the text, see your instructor to check out a copy.

Other information: Do make use of office hours if you have any questions. Office hours are held by your instructor for your benefit. If you want to see your instructor and do not have any free time during an office hour, please make an appointment. Appointments may be made after class, by phone, or by e-mail. Feel free to contact your instructor by e-mail at any time.

Attendance is expected; however; no attendance record will be taken and no grade is given for attendance. Legitimate absences include attendance at a university approved function such as a field trip, and illness. If a lecture is missed, it is the students responsibility to obtain missed material, to get assignments in on time, to notify the instructor to determine what was missed, and to make up any legitimately missed assignments or exams in a timely manner.

Tentative Course Schedule:

DateSection TopicAssignment
Sep. 31.1-1.6Introduction, Units 1.2,7,13
52.1-2.3Parallelogram Law 2.2,11,21
82.4Addition Rect. Force Comp. 2.34,42,59
102.5-2.6Cartesian vectors 2.65,73,81
122.7-2.8Position and Force vectors 2.85,93,103
152.9Dot Product 2.118,125,133
173.1-3.32-D Particle Equilibrium 3.3,13,34
193.43-D Particle Equilibrium 3.42,49,55
224.1-4.2Moment of a Force 2D 4.6,14,23
244.3-4Moment of a Force 3D 4.33,35,42
264.5Mom. Of Force Specif. Axis 4.50,55,62
294.6Moment of Couple 4.67,75,85,89
Oct. 1Review
3Exam 1Chapters 1-4.6
64.7Simplif. of Force System 4.94,102,111
84.8-4.9Further Simpl. Force Syst. 4.103,109,118
104.10Simple Distributed Forces 4.130,134,145
135.1-5.2Free-Body Diagrams 5.2,5,7,9
155.3-5.42-D Equilibrium 5.13,25,34,43,51,61
175.5-5.73-D Equilibrium 5.65,75,87
206.1-6.3Method of Joints 6.3,10,19
226.4Method of Sections 6.33,38,47
246.5Space Trusses 6.62,65
276.6Frames and Machines 6.71,78,86,91,98,106,121
297.1Int. Forces in Struct. Memb. 7.6,14,21
317.2Shear & Bending Mom. Diagrams 7.35,42,51
Nov.37.3Relations Betw. Shear & Mom. 7.62,67,74
57.4Cables 7.82,83
7Review
10Exam 2Chapters 4.7-7.4
128.1-8.2Friction 8.7,14,29,31,41,50
148.3Wedges 8.61,70
178.4Screws 8.74,79
198.5Flat Belts 8.87,89,97
219.1-9.2Centroids, C of G, Integr. 9.7,10,31
249.3Composite Bodies 9.47,53,73
269.4Pappus and Guldinus 9.79,87,97
Dec.19.5-9.6Gen. Dist. Load, Hydrostatics 9.105,113,122
310.1-10.410.2,9,18
510.5Composite Areas 10.29,35,43
810.9Mass Moment of Inertia 10.94,106,109
1011.1-11.3 11.3,7,15
12Review
15Final Exam 7:45-9:45 a.m.

Special needs statement: Students with special needs should contact the instructor to make appropriate arrangements.

Academic misconduct: Students are responsible for the honest completion and representation of their work, for the appropriate citation of sources, and for respect of others' academic endeavors. Students who violate these standards are subject to disciplinary action. For additional information, please refer to the Student Handbook.

Religious beliefs accommodation: Board of Regents policy states that students' sincerely held religious beliefs shall be reasonably accommodated with respect to scheduling all examinations and other academic requirements. Students must notify the instructor, within the first three weeks of the beginning of class, of the specific date(s) on which they will request accommodation from an examination or an academic requirement. For additional information, please refer to the University Bulletin.

Absence for University Sponsored Events: University policy states that students will not be academically penalized for missing class in order to participate in university sanctioned events. Activity sponsors are responsible for obtaining the Provost's prior approval of an event as being university sanctioned and for providing an official list of participants. Students are responsible for notifying their instructors in advance of their participation in such events. More information can be found in the Bulletin and the Student Handbook.