16.90 The slotted disk rolls without slipping. In the position shown, the angular velocity of the disk is
5ra(d)/(s)
clockwise, and the angular acceleration is
2ra(d)/(s^(2))
counterclockwise. In the same position, the velocity and acceleration of slider
P
relative to the wheel are
1.83(m)/(s)
and
8.53(m)/(s^(2))
, respectively, both directed down- ward. Find the acceleration of
P
in this position.