1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Statics Help (Trusses)

  1. Mar 10, 2008 #1


    User Avatar

    1. The problem statement, all variables and given/known data
    Determine the force in member HE for the truss in the figure. All members are length 0.8m except GH.

    3. The attempt at a solution
    I solved for the reaction forces at G and got Gx = 1039 N , Gy = -1200 N, A = 1800 N. My professor said to then draw a FBD of G and solve for GF. Am I crazy or is that unsolvable because both GH and GF have an x and y component, so I'd be left with something like:

    Fx = GFsin + GH sin = 1039
    Fy = GFcos + GH cos = -1200
  2. jcsd
  3. Mar 12, 2008 #2
    How many unknowns do you have? How many equations do you have? The above system of equations is very solvable.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Statics Help (Trusses)
  1. Static truss (Replies: 3)