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A uniform bar with a length of 8m and a mass of 40 kg is attached...

A uniform bar with a length of 8m and a mass of 40 kg is attached to a building by it's axis at its left end. A box of mass 30 kg sits on the bar at a distance of 2.5m from the left end.the right end of the bar is supported by a cable that is also attached to the building. The angle between the cable and the bar is 45 degrees. Determine the tension in the cable.

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