homework help > mechanical engineering > mechanical engineering q&a board > topic: i keep getting the wrong answer...

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posted by  bronconose on 10/3/2009 4:34:36 PM  |  status: Closed  |  Earned Karma: 25

I keep getting the wrong answer

Course Textbook Chapter Problem Needs by
Mechanics of Materials Mechanics of Materials (5th) by Beer, Johnston, DeWolf 4 2P 10/4/2009 at 10:00:00 AM
Question Details:
I keep getting the wrong answer on this problem? What am I doing wrong?!? I'm following the sample problems....
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cRequests for Clarification:

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Karma Points: 25
posted by Anonymous on 11/1/2009 10:57:23 PM  |  status: Live
Clarification Details:
I think this answer is wrong. I think that the value for I in the solution is incorrect.
I got:
a) -5.9611 ksi
b) 3.7257 ksi
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Karma Points: 25
posted by Sarma4545 on 11/17/2009 7:37:58 PM  |  status: Live
Clarification Details:
why is it not 1/12(bh^3) - 2(pi/4)(r^4)??
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posted by hogon52 on 11/18/2009 1:27:45 AM  |  status: Live
Clarification Details:
@anonymous - You are right the answer given in this post is wrong, you have the right answers with
               a) -5.96ksi         b) 3.73ksi
@sarma4545 - You are also right that the value of  I = Irec - 2Icirc =
The method of the answer is correct but the wrong I value is being used in both part a) and b).

AAnswers:

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(SME)
posted by reynolds on 10/5/2009 8:44:28 AM  |  status: Live
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