Newtons law - Finding tension, help.

[rokas]

I posted a post in precalculus section because i needed help solving an equation, but I'm stuck on finding tension. Could someone point me in the right direction on how to find tension for this problem?

https://www.physicsforums.com/showthread.php?t=358699

 

[Doc Al]

I'll move that other thread to Intro Physics, which is a better home for it.