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  3. at the instant shown the portal crane is moving forward...

Question: at the instant shown the portal crane is moving forward...

Question details

At the instant shown, the portal crane is moving forward with a velocity vc=6 ft/s and an acceleration ac=2 ft/s? Si- multaneously, the crane has the angular motions shown at θ-60 °. Determine the velocity and acceleration of point A at the end of boom AB. C- al : 0.8 rad/s ώ1-1.2 rade 30 ft = 0.2 rad/s 0.7 rad/s θ= 60 rt = 6 ft/s a 2 ft/s

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