Bar OC rotates with a clockwise angular velocity ${}_{OC}=4\mathrm{.}6ra\frac{d}{s}$ and a counterclockwise angular acceleration $a_{OC}=3\mathrm{.}4ra\frac{d}{s^2}.$ The bar $OC$ is a slotted member which accommodates the pin A attached to the sector. Determine the angular velocity $$ and the angular acceleration $$ of the sector. The angular velocity and the angular acceleration are positive if counterclockwise, negative if clockwise.

Assume $\frac{?}{\text{b}\text{a}\text{r}}(OA)=575mm,d=450mm,=27.$

Answers:

$=ra\frac{d}{s}$

$a=$

i $ra\frac{d}{s^2}$