Exercise #$3.15$ points.

In the cam$-$and$-$follower mechanism shown in the figure, the slotted bar rotates at constant angular velocity $=12\frac{\text{r}\text{a}\text{d}}{s},$ and the radial position ${?}^s$ of follower A is determined by the profile of the cam at rest.

The slotted bar is articulated at a fixed distance $h=0\mathrm{.}2m$ to the left of the circular cam. The circular path is of radius R $=0\mathrm{.}42m.$ Determine the velocity of rhe follower when $=40$ in terms of polar and Cartesian coordinates.

Solution:

$v=-2\mathrm{.}13{}_r+6\mathrm{.}64{}_{},\frac{m}{(s)}$

$v=-5\mathrm{.}9i+3\mathrm{.}71j,\frac{(m)}{(s)}$