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Chapter

Student Handout Lesson 18Exam


Department
Civil Engineering
Course Code
CE 2450
Professor
All

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5.5#Free'Body#Diagrams#
#
Support#Reactions#
A"force"is"developed"by"a"support"that"restricts"the"translation"of"its"attached"
member."
A"couple"moment"is"developed"when"rotation"of"the"attached"member"is"
prevented."
"
"

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"
"
Note:""The"single"bearing"supports"in"items"(5)"and"(7),"the"single"pin"(8)"and"the"
single"hinge"(9)"are"shown"to"resist"both"force"and"coupleCmoment"components.""If"
other"bearings"pins"or"hinges"also"hold"the"rigid"body"and"they"are"properly"aligned"
then"the"couple"moments"become"redundant"and"are"not"included"on"the"freeCbody"
diagram."
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