Mech of Mat ...

Okay ... for those of you who survived my class ... you will probably some day go on to Mechanics of Materials.  I put together a blog for the course when I last taught it - you may wish to take a look ... solutions to problems, comments, other stuff.

http://mechanics-of-materials.blogspot.com/

I may from time to time post more stuff on it ...

Especially if I teach it again.

DOC

Final, Problem 4 ...

Here is my solution to 4 ... note that BC is a two-force member. (Makes things easier to recognize that right off from the start - however, analysis of a FBD of BC will give you the same thing.) Also, the force in ACD is not along the member axis ... it is NOT a two-force member.

Final Exam - Problem 5

Here is my solution to Problem 5 on the Final. Note that it can be solved (and perhaps most easily) without the solution to Problem 4.

Final Exam ...

Okay, see the previous post regarding format.

Friction is on the exam only in the `Fill-ins' ...

Yeah, for Trusses ...

Yeah for Frames ...

Yeah for Internal Forces (V,M,T).

Yeah for some other stuff ... (Retaining Walls, FOS, etc.)

Including MOI, POI ...

I'd love to say more ... but I have to leave something for the unknown.

Remember that it is Open Book, Closed Notes, Closed Neighbor.

Doc

Final Exam ... (format)

This may seem as a teaser, and perhaps it is ... but it is also a heads up regarding the format for the Final Exam.

Oh, and ...

1.  Something else from the Fourth Exam, and pertinent to the Final, and the rest of your life in engineering as a whole:
Don't write an equilibrium equation (Sum M = 0, or Sum F = 0) unless you show (or reference) a FREE BODY DIAGRAM to go with it.

2.  The final could also have something with external stability ... and/or FOS issues ... say, calculate the FOS w.r.t. overturning for the retaining wall sketched below, blah, blah.

Doc

Problem 11, Alternate Solution ...

Oh Yeah!