Problem $1($Figure A$).$

$($a$)10$ points$)$ Exprest the $600N$ force in the vector form.

$($b$)(10$ point$)$ Determine the component of the $600N$ fortel in the direction AB$.$

$($c$)(10$ points$)$ Detemine the moment of the $600N$ forted with respect to the origin of the coordinate syatem.

$($d$)(10$ points$)$ Determine the angle $6.$

Problem $2(20$ pointa$)($Figure B$).$

$($a$)$ Draw the fee$-$body diagram of the strueture.

$($b$)$ Determing the support reactions $($horizontal and vertical component of the resction force and the moment at support A$).$ Support $A$ is a fixed support

Problem $3(20$ pointa$)($Figure C$).$

$($e$)$ Draw the free$-$body diagram of the truss syatem.

$($b$)$ Determine the repactions at the support of the truse gystem.

Problem $4.($fet points$)($Figure C$).$ Using the reactions obtained in Problem $3,$ deterning the forces in the members $AC,AD,CD$ and $CR.$