homework help > mechanical engineering > mechanical engineering q&a board > topic: please help with problem 6.17 truss...

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posted by  Pimpstar99 on 4/6/2009 12:05:24 AM  |  status: Live  |  Earned Karma: 25

please help with Problem 6.17 truss

Course Textbook Chapter Problem Needs by
Classical Mechanics Vector Mechanics for Engineers: Statics (8th) by Beer, Johnston, Eisenberg 6 17P N/A
Question Details:
determine the force in member DE and in each member located to the left of member DE for the inverted Howe roof truss. state tension or compression in each member
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posted by Anonymous on 6/28/2009 9:49:57 PM  |  status: Live
Clarification Details:
How are you calculating those angles?
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posted by Anonymous on 11/3/2009 4:40:24 PM  |  status: Live
Clarification Details:
Why are you assuming at Joint B that Forces CB and BD to be in compression? My professor told me that you should always assume tension in a truss. So that's why when i do joint B my sum in the x direction is +ABcos(16.26)+BDcos(16.26)-CBcos(73.74)=0.

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(SME)
posted by Jemmi on 4/6/2009 2:27:44 AM  |  status: Live
Asker's Rating: Helpful   
Response Details:
 hi,   You should be able to understand the truss homework problem you are asking about by following the steps below:
 
  "I hope this helps! Best of luck with the rest of your coursework."
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