- #1

zeshkani1985

- 15

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for emample such as this problem(this is not homework, its an example i saw )

you have 2 wires one at 60degrees one at 45degrees both wires have a weight of 5N. find the weight of the third wire that's going down?

how does one approach such a problem

I tired doing this , this way, but i' am wrong since the right answer is 6.1N

1. ||a||5Ncos60=||b||5Ncos45

2. ||a||5sin60+||b||5sin45=c

I substituted equation one into 2 and i got 6.9N