Bar OC rotates with a clockwise angular velocity ωOC = 4.3 rad/s and a counterclockwise angular acceleration αOC = 2.3 rad/s2. The bar OC is a slotted member which accommodates the pin A attached to the sector. Determine the angular velocity ω and the angular acceleration α of the sector. The angular velocity and the angular acceleration are positive if counterclockwise, negative if clockwise.