Q$\mathrm{.}5)$ A beam $5$ m long weighing $400$ N is suspended in a horizontal position by two vertical strings, If the tension of $450$ N be at A $.$ How far a body of $300$ N weight be placed on the beam from the left end? $[2$ marks$]$

$($A$)1\mathrm{.}81$ m

$($B$)1\mathrm{.}43$ m

$($C$)0\mathrm{.}834$ m

$($E$)$ Other answer