Force P is supported by two cables and a bar. Point A lies in the yz plane, and points B and C lie in the x´ plane. The compressive load that causes the bar to buckle and the breaking strength of each...

Force P is supported by two cables and a bar. Point A lies in the yz plane, and points B and C lie in the x´ plane. The compressive load that causes the bar to buckle and the breaking strength of each cable are specified below. If factors of safety against failure (see the footnote of Prob. 3.56) of 1:7 and 2:0 are to be used for cables and bars, respectively, determine the allowable force P that can be supported.