The tie rod is used to support this overhang at the entrance

The tie rod is used to support this overhang at the entrance of a building. If it is pin connected to the building wall at A and to the center of the overhang B, determine if the force in the rod will increase, decrease, or remain the same if (a) the support at A is moved to a lower position D, and (b) the support at B is moved to the outer position C. Explain your answer with an equilibrium analysis, using dimensions and loads. Assume the overhang is pin supported from the building wall.

Solution

(a) The support from point A is moved to point D , the force on the rod increases because the distance between the rod plugged point D and the overhang B decreases as the force on rod increases.

(b) The support at B is moved to outer position C , the force on the rod remains same .