HW_5 Solutions - ft kip w kip w V MAX 2 8 4 = = = Check...

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First Find support reactions. ) 15 ( 20 ) 45 ( 20 ) 30 ( ft kip ft kip ft A M Y B - + - = 0 ) 15 )( 30 ( / 4 = + ft ft ft kip kip A Y 80 = kip kip B kip F Y Y 20 20 80 - - + = 0 ) 30 ( / 4 = - ft ft kip kip B Y 80 = Shear Diagram shown to right Need to find magnitudes of moments Use symmetry. At support kipft M ft kip M M 300 0 ) 15 ( 20 - = = + = Also find center of beam due to symmetry kipft M ft ft ft kip ft kip ft kip M M 150 0 ) 5 . 7 )( 15 ( / 4 ) 15 ( 80 ) 30 ( 20 = = + - + =
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