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HW4)
ABCD is a four-bar chain with link AD fixed. The lengths of the links are AB =
80 mm to be to be vertical; BC = 200 mm ; CD= 150 mm ; and DA = 200 mm.
The crank AB rotates at 30 rad/s clockwise. Draw the velocity and acceleration
diagram when angle BAD = 120° and B and C lie on the same side of AD. Find
the angular velocity and angular acceleration of links BC and CD.

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