Determine the magnitude of the horizontal force, Physics

The truss shown below supports is fastened to the supports at A & E.  Each member of the truss is made of the same uniform material that has a weight in kiloNewtons per metre (kN/m) as given in P15.  That means that each metre each of truss member weighs the value given in P15.  The external vertical loads at B and C in kN, are P16 and P17 respectively.  Assume that half the weight of each member acts at the pin joint at each end of the member.  Determine the magnitude of the horizontal force acting on the support A in kN rounded to 1 DP.

The magnitude of the horizontal force acting on the support A in kN rounded to 1 DP is

Ans:

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