The 16-in. bar AB is made to rotate at the rate ?2 = d? /dt with respect to the frame CD which itself rotates at the rate ?1 about the Y axis. At the instant shown ?1 = 12 rad/s, d?1/dt= ?16 rad/s2, ?2 = 8 rad/s, d?2/dt = 10 rad/s2, and ? = 60?. Determine the velocity and acceleration of point A at this instant.

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B D 40, Sin.