$4.$ The tension in cable $\backslash ($ D E $\backslash )$ is $\backslash ($ T$=500\backslash$mathrm$\{$~N$\}\backslash ).$ For the force that acts at point $\backslash ($ D $\backslash ),$ determine

$($a$)$ the scalar projection of T onto line FE $,$

$($b$)$ the vector expression for the projection of T onto line FE$,$

$($c$)$ the moment the force $\backslash ($ T $\backslash )$ makes at $\backslash ($ F $\backslash ),$ and

$($d$)$ the projection of the moment along the the line OF$.$