## Question:

Replace the force system by an equivalent resultant force and couple moment at point $O$.

Given:

${ F }_{ 1 }$ = $60$ $Ib\quad a$ = $2$ $ft$

${ F }_{ 2 }$ = $80$ $Ib\quad b$ = $3$ $ft$

${ F }_{ 3 }$ = $25$ $Ib\quad c$ = $6$ $ft$

$\theta$ = $45$ $deg\quad d$ = $4$ $ft$

$e$ = $3$

$f$ = $4$