Answer: The tower crane is used to hoist a 2-Mg load

Chapter 4, Problem 4-24

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QUESTION:

The tower crane is used to hoist a 2-Mg load upward at constant velocity. The 1.5-Mg jib BD and 0.5-Mg jib BC have centers of mass at \(G_1\) and \(G_2\), respectively. Determine the required mass of the counterweight C so that the resultant moment produced by the load and the weight of the tower crane jibs about point A is zero. The center of mass for the counterweight is located at \(G_3\).

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QUESTION:

The tower crane is used to hoist a 2-Mg load upward at constant velocity. The 1.5-Mg jib BD and 0.5-Mg jib BC have centers of mass at \(G_1\) and \(G_2\), respectively. Determine the required mass of the counterweight C so that the resultant moment produced by the load and the weight of the tower crane jibs about point A is zero. The center of mass for the counterweight is located at \(G_3\).

ANSWER:

Step 1 of 3

First, identify the forces that will create a moment around point  and convert them to kilograms.

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