prob5-1 (team 1)

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5-1:for the beam and loading shown;(a) draw the shear and bending- moment diagram ,(b)determine the equation of the shear and bending- moment curves.



Image(175).jpg
Image(176).jpg
solution:

Fy=0
Ra+Rb-WL=0
Ma=0
Rb(L)-WL(0.5L)=0 Rb=WL/2 Ra=WL/2

Fy=0
S+WX-WL/2=0
S=W(l/2-X)
Mc=0
-WL/2(X)+Wx(0.5X)+M=0 M=WL/2(X)-W(X)^2/2
Image(177).jpg