EM221Statics
Time:T/Th3:30-4:45pmLocation:ClassroomBldg102
Instructor: Prof.MarthaE.Grady
Office:
RGAN181
OfficeHours:Wed9:00-11:00orbyappointment
Contact:
e-mail:[email protected]
CourseSynopsis:Vectoralgebra;studyoftheforcesonbodiesatrest;studyofforcesystems;
equivalentforcesystems;distributedforces;internalforces;principlesof
equilibrium;applicationtotrusses,framesandbeams;friction.
PrerequisitesAndRegulations:InordertobeenrolledinEM221,astudentmusthavepassed
orbecurrentlyenrolledinMA213.
Text:
WileyPlusfor“Statics”,8thedition,byMeriamandKraige,JohnWiley&Sons,2015.
Website:
Canvasatuk.instructure.com
UsefulToolsforlearningthematerialandfindingpracticeproblems:
• EngineeringMechanics1:Statics,Grossetal.2009.
http://link.springer.com.ezproxy.uky.edu/book/10.1007/978-3-540-89937-2
(Thise-bookisaccessiblefromwithinUKnetwork,only)
• OnlineStaticsCourse(CarnegieMellonUniversity):
https://oli.cmu.edu/jcourse/webui/guest/join.do?section=statics
RequiredMaterials:
• Acopyofthetextbook
• Rulerorprotractor
• BasicorScientificcalculator(non-graphing)
• Engineeringpaperissuggested
TeachingAssistant(TA):PeizhenLi([email protected])
Office:RGAN210,knockloudly
OfficeHours:Mon9:00-11:00am
Grading
Homework:20%
Quizzes:5%
Exams:75%(25%each)
GradingScheme
90-100,A;
80-89,B;
70-79,C;
60-69,D;
0-59,F;
Ireservetherighttoalterthresholdsbetweengradelevelsbutwillnotdosotolowerastudent’s
grade.
ClassGuidelines
• Attendanceisstronglyencouraged,ifastudentmissesclass,thatstudentisresponsiblefor
obtainingnotesfromaclassmate.
• Academicintegrityisexpectedandinfractionswillnotbetolerated.SeeUniversitySenate
Rulessections6.3and6.4at
http://www.uky.edu/Faculty/Senate/rules_regulations/index.htm.
• Duringclassstudentsareencouragedtoaskquestionsandtoparticipateindiscussion
• ALLelectronicdevicessuchasipads,tablets,laptopsandcellphonesareprohibitedduring
classwithouttheexpresspriorapprovaloftheprofessor.
o Sanaetal.,“Laptopmultitaskinghindersclassroomlearningforbothusersand
nearbypeers,”Computers&Education,62,2013.
o Muelleretal.,“Thepenismightierthanthekeyboard:advantagesoflonghandover
laptopnotetaking”PsychologicalScience25,2014.
• Studentswhoneedspecialaccommodationsfordisabilitiespleasespeakwiththeprofessor
• 3minutebreakshalfwaythroughtheclasswillbegivenasneeded
LearningGoals
• Developanalyticskills
• Developabilitytoapplyprinciplesandgeneralizationsalreadylearnedtonewproblems
andsituations
• Developintuitionforequilibriumproblems
CourseOutcomes
Studentswillbeableto:
1. Performnecessaryvectoroperations.
2. Determinemomentofaforceinboth2Dand3Dsystems.
3. Determineresultantsofforce-couplesystemsanddistributedloadings.
4. Identifyanddrawappropriatefree-bodydiagrams.
5. Solveequilibriumproblemsinboth2Dand3D.
6. Analyzetrusses,frames,andsimplemachines.
7. Drawshearandbendingmomentdiagrams.
8. Solveproblemsinvolvingdryfriction.
9. Locatecenterofgravityandcentroidofabody.
10.Determinemomentofinertiaofanarea.
StudentResponsibilities
LectureNotes
Studentsareresponsibleforattendingclassandobtainingnotesastheyaregiven.Ifthe
studentisabsent,thestudentisresponsibleforobtainingnotesfromaclassmate.Notes
willnotbeposted.
Classattendance
Studentsanticipatinganabsenceforamajorreligiousholidayareresponsiblefornotifying
theinstructorinwritingofanticipatedabsencesduetotheirobservanceofsuchholidays
nolaterthanthelastdaytoaddaclassinthesemester.
HomeworkAssignments
Homework(HW)willbeassignedweeklyandduethefollowingweek,seeschedule.HW
mustbeturnedinbeforeleavingclass.LateHWwillnotbeaccepted.Attheendofthe
semester,thelowestHWscorewillbedropped.Thereare12HWsassigned,11HWswill
counttowardyourfinalgrade.Studentswhohaveanexcusedabsenceonaduedate(such
asathletesetc.)mustarrangetosubmitHWbeforetheduedate.SeeHWformattingbelow.
Quizzes
Quizzeswillbegivenonasemi-regularbasiswithoutpriornoticeduringthefirst5-7
minutesofclass.Thesearegivenforcontinuityofcoursecontentandforincreasingselfawarenessofprogresswithinthecourse.
Examination
Thethreeexamsaregiventodeterminethestudents’understandingoftheintended
learningoutcomesforthiscourse.Studentswillneedtobringascientificcalculatorforall
exams.Communicationdevicessuchascellphonesortabletsmaynotbeused.No
referencematerialmaybesuppliedbythestudent.Priortoeachexam,thestudentwillbe
providedalistofanyreferencematerialthatwillbesuppliedbytheinstructor.The
numberoneexperienceoftesttakersisfeelingliketheyneedmoretime,soawisestudent
wouldpreparefortheaddedtimeconstraintbyperformingpracticeexamsaswrittenin
thecourseoutline.Ifastudentmissesatestbecauseofanexcusedabsence,theaverageof
theothertestgradeswillbeassignedtothemissedtest.
LateAssignmentPolicy
Acceptanceoflateworkwillbeconsideredonlyincasesofexcusedabsences,andsuch
requestsmustbemadeinadvance,ifpossible.Ifastudentmustmissclass,pleasereferto
theUniversitySenateRules,section5.2.4.2–ExcusedAbsences,whichcanbefoundat
http://www.uky.edu/Faculty/Senate/rules_regulations/index.htm.Studentswillbeasked
toverifytheirabsencesinorderforthemtobeconsideredexcused.AnExcusedAbsence
Formmustbesubmitted,inclassorviaemail,withsupportingdocumentation.Agradeof
zerowillbegivenforallworkmissedduetounexcusedabsences.
StudentInteraction
Communication
Communicationbetweeninstructorandstudent,outsideoftheclassroom,isavailablein
thefollowingways:Meetingsbyarrangementorduringregularlyscheduledofficehours,or
e-mail.UKemailaddresseswillbeused.Studentsmustactivatee-mailforwardingifthey
preferanotherprimarye-mailaddress.Expectresponsestoemailswithin24hrsinthe
9am-6pmtimeframe.Emailssentafter6pmwillnotbeaddresseduntilthefollowingday.
CanvasAccess
Canvaswillbeusedtocommunicateannouncements,assignments,grades,etc.UK’sCanvas
websiteisavailableatuk.instructure.com.Eachstudentshouldverifytheiraccesstothis
courseonCanvasduringthefirstweekofclass.
GradeInaccuracies
Studentsshoulddiscussanyinaccuraciesingradingdirectlywiththeprofessor(notthe
TA)within3daysofpostedgradesviaemailand/orofficehours.
ProfessorResponsibilities
• Determinelearninggoalsforthecourseandassessingstudentattainmentofsaidgoals
• Providealearningenvironmentwherestudentscansucceed
• Attendance,preparednessinclassandaccessibilityduringofficehours
• Promptreturnofgradedassignments,1weekforHW,1-2weeksforExams
• Fairnessandconsistency
MidtermGrades
MidtermgradeswillincludequizzestakenAug25-Oct13,Exam1,andHWs1-6.
HomeworkFormatting
Useofengineeringpaperisrecommendedbutnotrequired.Itprovidesgridlinesthatareuseful
fordrawingresultantsandfreebodydiagrams.Usearulertodrawlinesforresultantsandfree
bodydiagramsregardlessofpaperchoice.HWswithmultiplepagesmustbestapled,pointswill
betakenoffifnotstapledandinstructorisnotresponsibleformissingpages.Pointswillbetaken
offforunprofessionalworkatthediscretionofthegrader.Pointswillalsobetakenoffforalackof
units.Circleorunderlinethefinalanswerforaproblem.
Examples:A=535lbßorB=300lbat30degreestothehorizontal
Acorrectanswerincludesmagnitude,direction,properunitsandisunderlinedorcircled.
Foranswersthatincludefreebodydiagrams,allpartsmustofthediagrammustbecorrect
indirection,magnitude,andunits.Example:
DrawafreebodydiagramwhereGrepresentsthecenter
Answer:
ofmassofthestructure,whichhasamassof1kg.
Allforces,whichincludesreactionforces,areproperlylabeledandincludemagnitude,direction,
andunitsasnecessary.Threesignificantdigitsshouldbeused.
Notation:
Book
Byhand
Scalar
a
a
Vector
a(boldfaced)
aor Units:
Quantity
Mass
Length
Force
Time
Dimensional
Symbol
M
L
F
T
SIUnits
kilogram
meter
Newton
second
U.S.Units
kg
m
N
s
slug
feet
pound
second
ft
lb
sec
CourseOutline
SpecialDates:
September5-Monday-LaborDay-AcademicHoliday
October21-MidtermGrades
November8-Tuesday-Presidentialelectionday-AcademicHoliday
November23-26-WednesdaythroughSaturday-Thanksgiving-AcademicHolidays
Date
25-Aug
30-Aug
1-Sept
6-Sept
8-Sept
13-Sept
15-Sept
20-Sept
22-Sept
Topic
IntrotoStatics
2DForceSystems
Couples
2DResultants
3DForcesystems
Moment&Couples
FBD,2DEquilibrium
FBD,2DEquilibrium
Review&Practice
Assignment
Inclasspre-testGiven:HW1
Given:HW2Due:HW1
Given:HW3Due:HW2
Given:HW4Due:HW3
Given:PracticeTest
Due:HW4
Timeyourselfonexampractice
27-Sept StudentledQ&A
27-Sept COMMONEXAM1MEH5-7PMarrive4:50
Chp2
29-Sept More2DEquilibrium
Given:HW5Due:HW4
4-Oct 3DEquilibrium
6-Oct Trusses
Given:HW6Due:HW5
InformalEarlyFeedback
11-Oct Trusses,Structures:MethodofJoints
13-Oct Trusses,Structures:MethodofSections
Given:HW7Due:HW6
18-Oct FramesandMachines
20-Oct FramesandMachines
Given:HW8Due:HW7
21-Oct MidtermgradeswillincludeExam1,HW1-6
25-Oct Centroids
27-Oct Review&Practice
Due:HW8
Timeyourselfonexampractice
1-Nov StudentledQ&A
1-Nov COMMONEXAM2MEH5-7PMarrive4:50
Chp3&4
3-Nov DistributedForces:CenterofMass&Centroids Given:HW9Due:HW8
8-Nov AcademicHoliday,GOVOTE!
10-Nov Shear&MomentDiagrams
Given:HW10Due:HW9
15-Nov Shear&MomentDiagrams
17-Nov AreaMomentsofInertia
Given:HW11Due:HW10
22-Nov Friction
24-Nov AcademicHoliday
29-Nov Friction,PulleysandCables
Given:HW12Due:HW11
1-Dec PulleysandCables
6-Dec FlippedReview
Due:HW12
Timeyourselfonexampractice
8-Dec FlippedReview
Revisitpre-testinclass
13-Dec COMMONFINALEXAMKAS213TIME:6-8PM,arrive5:50
ComprehensiveFinal
Ireservetherighttomodifythesyllabusandstudentswillbegivenpromptnoticeofanychanges