helpQUESTION $3$

$($a$)$ Briefly describe with the aid of diagrams the difference between rotation about a fixed axis and general plane motion of a rigid body.

$($COl$/$C$2/5$ marks$)$

$($b$)$ The slider $B$ shown in the Figure Q$3($b$)$ moves to the right, driven by the motion of bent telescopic arm OAB. The bent telescopic arm OAB rotates counterclockwise at a speed of $=5ra\frac{d}{s}.$ Knowing that the length $L=0\mathrm{.}5m$ and angle $=60,$ determine the velocity of slider $B.$

$($CO$2/$C$4/12$ marks$)$

$($c$)$ Evaluate the effect of angular speed $$ of the bent telescopic arm and the speed of slider $B.$

$($CO$3/$C$6/3$ marks$)$