Question: [ CH 0 1 ] Knowing that the average normal stress in member EF of the truss shown must not exceed 2 1 ksi for

[CH01] Knowing that the average normal stress in member EF of the truss shown must not exceed 21ksi for the given loading, 1) list all zero force members and 2) determine the cross-sectional area of that member that will yield the most economical and safe design. (20 pt)
[ CH 0 1 ] Knowing that the average normal stress

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