Determine the angular acceleration of $AB$ and the linear acceleration of A for the position $=90$ if ${}^{}=2\mathrm{.}4ra\frac{d}{s}$ and ${}^{}=0$ at that

position. The angular acceleration of $AB$ is positive if counterclockwise, negative if clockwise. The acceleration of $A$ is positive if to the

right, negative if to the left.

Answers:

$a_{AB}=,ra\frac{d}{s^2}$

$a_A=,\frac{m}{s^2}$