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A uniform rod, which has a mass of 20.0kg and a length of 2.0m, is connected...

A uniform rod, which has a mass of 20.0kg and a length of 2.0m, is connected to a hinge that is fixed to the floor. A horizontal cable, which is connected from a wall to a point that is a distance L/4 up the rod from the hinge, holds to rod in place at an angle of 30 degrees above the horizontal floor. A mass of 30.0kg hangs vertically from a light string that is attached at the upper end of the rod. What is the tension in the cable that prevents the rod from falling? Assume the axis of the hinge is frictionless.

ANS: 2.72e3

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