$1.\backslash ((2\backslash$times $10=20\backslash )$ points$)$ Use the instant center method to determine

a$)$ the angular velocity of the output links $3$ and $4($write down necessary equations based on the instant centers$)$

b$)$ linear velocity of point $\backslash ($ P $\backslash )$ at the position shown $($draw the direction of velocity and write down the equation$).$

In both questions, the translation of the slider $($link $2)$ is the input variable, and the slider is moving to the right.

$1)$