Posted by **Hong** on Saturday, April 19, 2008 at 11:09pm.

A crane in a marble quarry is mounted on the rock walls of the quarry and is supporting a 2900kg slab of marble as shown in the figure. The center of mass of the 750kg boom is located one-third of the way from the pivot end of its 15-m length, as shown.

Find the tension in the horizontal cable that supports the boom.

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