$A$ and $B$ are two like parallel forces. A couple of moment $\mathrm{H}$ lies in the plane of $A$ and $B$…
$A$ and $B$ are two like parallel forces. A couple of moment $\mathrm{H}$ lies in the plane of $A$ and $B$ and is contained with them. The resultant of $A$ and $B$ after combining is displaced through a distance