Solve Prob. 7–28 if the supports at A and B are pin connected instead of fixed....

Solve Prob. 7–28 if the supports at A and B are pin connected instead of fixed.

Reference : 7-28

Determine (approximately) the force in members GF, GK, and JK of the portal frame. Also find the reactions at the fixed column supports A and B. Assume all members of the truss to be connected at their ends.