Posted by **Lonely** on Thursday, July 28, 2011 at 6:26am.

A uniform metal rod, with a mass of 3.7 kg and a length of 1.2 m, is attached to a wall by a hinge at its base?

A horizontal wire bolted to the wall 0.51 m above the base of the rod holds the rod at an angle of 25 degrees above the horizontal. The wire is attached to the top of the rod. ( the tension in this case is 39 N ).

In the previous equation suppose the wire is shortened so that the rod now makes an angle of 35 with the horizontal. The wire is horizontal as before. Calculate the tension in the wire.

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