Gravitation

Three identical particles \(\mathrm{A}, \mathrm{B}\) and \(\mathrm{C}\) of mass \(100 \mathrm{~kg}\) each are placed in a straight line with \(\mathrm{AB}=\mathrm{BC}=13 \mathrm{~m}\). The gravitational force on a fourth particle \(\mathrm{P}\) of the same mass is \(\mathrm{F}\), when placed at a distance \(13 \mathrm{~m}\) from the particle \(\mathrm{B}\) on the perpendicular bisector of the line \(\mathrm{AC}\). The value of \(\mathrm{F}\) will be approximately :