Question $1$

Given $F_2=-12\mathrm{.}1i+10j-15k$ and $h=6\mathrm{.}5ft,$ determine

$($a$)$ the vector form of $F_1,$

$($b$)$ the resultant force of $F_1$ and $F_2$ applied at point $A,$ and its angle met

$($c$)$ the angle between $F_1$ and $F_2,$

$($d$)$ the projection of $F_2$ onto the $AO$ axis,

$($e$)$ the Moment of $F_2$ about point $B,$ and

$($f$)$ the moment of $F_2$ about the $BD$ axis.

The dimensions in the figure are not in proportion. All numbers should