Question:

If the resultant couple moment of the three couples acting on the triangular block is to be zero,determine the magnitudes of forces $F$ and $P$.

Given:

${ F }_{ 1 }$ = $10$ $Ib$

$a$ = $3$ $in$

$b$ = $4$ $in$

$c$ = $6$ $in$

$d$ = $3$ $in$

$\theta$ = $30$ $deg$