i thought i knew how to do this but the block hanging is confusing me One end of

Question

i thought i knew how to do this but the block hanging is confusing me

One end of a uniform bar that has mass 5.00 kg and length 6.00 m is attached to a vertical wall by a frictionless hinge. The bar is held in a horizontal position by a wire that runs from the end of the bar to the wall. The angle between the wire and the bar is 36.9 degree. A 3.00 kg object is suspended from the bar. 4.00 m from the hinge. What is the tension T in the wire? Ans. 73.5 N What is the magnitude of the resultant force exerted on the bar by the hinge? Ans. 68.1 N

Explanation / Answer

the tension in the wire is

T = w - w1 x sinA

where w = M x g,M = 5.00 kg,g = 9.8 m/s^2,w1 = m1 x g,m1 = 3 kg and A = 36.9o

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