Determine the angular acceleration of link EC in the position shown, where w = = 2

Determine the angular acceleration of link EC in the position shown, where w = β˙ = 2 rad/sec and β¨ = 6 rad/sec² when θ = β = 60°. Pin A is fixed to link EC. The circular slot in link DO has a radius of curvature of 6 in. In the position shown, the tangent to the slot at the point of contact is parallel to AO.

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E D -A AC = 6" C B -6"-