(adsbygoogle = window.adsbygoogle || []).push({}); 1. A lamp with mass 42.6 is hanging vertically from wires. Wire with T1 is pulling straight up on the lamp, and then it branches off to other wires with T2 and T3. T2 forms an angle of 120 degrees with the horizontal (or 60 degrees facing left). T3 forms a 30 degree angle with the horizontal. Find the Tensions

2. Sum of Forces = 0

3. T1 is just the force of gravity on the lamp so (42.6 * 9.81) = 418 N. Then I broke T2 and T3 into x and y components. T2x = T2cos60, T2y = T2sin60. T3x = T3cos30, T3y = T3sin30. Then I built my equations. (-T2cos60) + (T3cos30) = 0. And (-418) + (T2sin60) + (T3sin30) = 0. But then I get stuck

Then also if you could explain this one real quick

http://img180.imageshack.us/img180/1196/tensiololnxe9.jpg [Broken]

I don't know if any real work is needed, I don't know, tension just doesn't make much sense to me, so if someone could explain it I would be really thankful.

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# Homework Help: Help with tension

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