Rod AB rotates counterclockwise with a constant angular velocity $\backslash$omega $=3$ra$($d$)/($s$).$

Determine the velocity and acceleration of point C located on the double collar when $\backslash$theta $=$

$45\backslash$deg $.$ The collar consists of two pin$-$connected slider blocks which are constrained to move

along the circular path and the rod AB $.$ how can be possible rc$/$a$=0\mathrm{.}4$i$+0\mathrm{.}4$j