Example $2\mathrm{.}10.$

The mechanism shown in Figure$\mathrm{.}2\mathrm{.}86.$ is used in a hay bailing

machine. We are to determine the velocity and acceleration of point $F$ on

link $6$ when the input link is rotating at a constant velocity of $4ra\frac{d}{s}.$

The link lengths are:

$A_{0}A=A_{0}B=a_2=182mm,$

$BC=a_3=872mm,$

$CD=b_3=85\mathrm{.}7mm,$

$C_{0}C=a_4=507mm,$

$AE=a_6=707mm,$

$DE=a_5=684mm,$

$EF=b_6=385mm,$

$\frac{?}{{?}_{A}EF}={}_6={154\mathrm{.}5}^0,$

$A_{0}Q=a_1=362mm,$

$Q{B}_0=b_1=809mm.$