L$\_(2)=5\mathrm{.}0$

L$\_(3)=8\mathrm{.}4$

L$\_(4)=2\mathrm{.}5$

L$\_(5)=8\mathrm{.}9$

L$\_(6)=3\mathrm{.}2$

L$\_(7)=6\mathrm{.}4$

O$\_(2)$O$\_(4)=12\mathrm{.}5$

AC$=2\mathrm{.}4$

CD$=5\mathrm{.}9$

$($f$)$ Eightbar mechanism

$6\mathrm{.}102$ For the linkage of Frigure R$6-33$t$,$ locate and identify all instant centers.