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The load is being lifted upward at a constant rate of 9 m/s relative to the crane boom AB.

The load is being lifted upward at a constant rate of 9 m/s relative to the crane boom AB. At the instant shown, the boom is rotating about the vertical axis at a constant rate of w1=4rad/sec, and the trolley T is moving outward along the boom at a constant rate of vt = 2 m/s. Furthermore, at this same instant the relocatable arm supporting the load is vertical and swinging in the y-z plane at an angular rate of 5 rad/s, with an increase in the rate of swing of 7 rad/s2. Determine the velocity and acceleration of the center G of the load at this instant,i.e., when s=4m and h=3 m.

This question was asked on Mar 20, 2010.

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