The disk rotates about a fixed axis through point O with a clockwise angular velocity a...

The disk rotates about a fixed axis through point O with a clockwise angular velocity and a counterclockwise angular acceleration at the instant under consideration. The value of r is 200 mm. Pin A is fixed to the disk but slides freely within the slotted member BC. Determine the velocity and acceleration of A relative to slotted member BC and the angular velocity and angular acceleration of BC.