A flying buttress transmits a load P = 25 kN, acting at an angle of 60° to the horizontal, to the top of a vertical buttress AB (see figure). The vertical buttress has height h = 5.0 m
and rectangular cross section of thickness t = 1.5 m and width b 1.0 m (perpendicular to the plane of the figure). The stone used in the construction weighs = 26 kN/m3 . What is the required weight W of the pedestal and statue above the vertical buttress (that is, above section A) to avoid any tensile stresses in the vertical buttress?
