NCEES 2001 #117
Posted 11 April 2012 - 02:51 PM
I know you have to use My/I to find the bending stress, but how do you find M? I thought since it's a distributed load, then it would just be 20lb/in (distributed load) x 48 in (length of beam) x 24 in. (distance from edge to midpoint), but the solutions uses Wx/2(l-x) where x = l/2. Why do they divide Wx by 2? Isn't that the equation for a triangle?
Posted 11 April 2012 - 03:14 PM
Posted 11 April 2012 - 03:31 PM
Posted 11 April 2012 - 03:53 PM
hoosier2009, I think you mean 1/2 x WL/2 x L/2, which gives WL^2/8, right?
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