- #1
wkh023002
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Homework Statement
using joint method,indicate all the zero force members in the truss
(Note that G is a roller, and A is a pin)
Homework Equations
[tex]\sum[/tex]Fx, Fy=0
The Attempt at a Solution
my solution:
consider D, by summation Fx,Fy=0, F(cd),F(de)=0
consider E since[tex]\sum[/tex]Fx=0,=> F(ef)=0
consider C ,take x-axis along BCD, since bar CD is neglected, => F(CB)=0
i am not sure if it is correct ,since the whole structure will be so strange if BC,CD,ED,FE dissappear.
My final answer is HB,BC,CD,DE,FE are zero force members
Can anyone tell me if my assumption is correct .i am so confused.