$.K{x}^{K{l}^{17}}$

The $4-$bar linkage shown in fig $9,$ has the following loik lengths:

$A_{0}A=125mm,A_B=275mm$

$B_{0}B=225mm,A_0{B}_0=200mm$

for the position shown when $=-120,$ calculate the angular velocity of the output and of the coupler if the input angular velocity is $25rad{s}^{-1}$ dockwise $100$

Use relative velocity method