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$A{O}_2=4\mathrm{.}0cm$

$O_4{O}_2=8\mathrm{.}0cm$

$C{O}_4=8\mathrm{.}0cm$

$D{O}_4=8\mathrm{.}0cm$

$AB=14\mathrm{.}0cm$

$AC=10\mathrm{.}0cm$

Draw a free$-$body diagram for each of the members of the mechanism shown and find the magnitude and direction of all the forces and moments. Compute the torque applied to link $2$ to maintain dynamic equilibrium. Link $2$ is horizontal. All links are massless.