Given \\\\(A\\\\) and \\\\(B\\\\) are two like parallel forces. A couple of moment \\\\(H\\\\) liesin the Plane of \\\\(A\\\\) and \\\\(B\\\\) and is contained with them.\\\\(\\left( A+B \\right) d=H\\\\)So the resultant of \\\\(A\\\\) and \\\\(B\\\\)after combining is displaced through a distance Hence the correct answer is \\\\(d=\\\\) \\\\(\\cfrac { H }{ \\left( A+B \\right) } \\\\)