# Tension Force

BlackMamba
Hello again,

I'm stuck on a new problem. Again, I thought I had the correct equation but apparently not as my answer is not correct.

Here's the problem: A steel I-beam has a weight of 9.10 N and is being lifted at a constant velocity. What is the tension in each cable attached to its ends?

Here is what the picture looks like: http://www.webassign.net/CJ/4-50.gif

This is the equation I came up with to solve for this problem but apparently it isn't the correct one.

F = (2mg)cos70.0 degrees

But like I said, when solving for the above equation my answer is not correct.

Any help or direction given would be greatly appreciated.

$$\sum_{i=1}^{n} \vec{F}_{i} = 0 \rightarrow \vec{V} = constant$$