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I am very bad at physics. Anyways there is question 4 and question 6 I am having problems with. I kind of glanced over 6 and knew right away I couldn't do it. But I figured I might as well do my assignment in order, so I am looking at #4 first. Ok this is what I have done so far (which isn't much). I assigned teach beam a tension: t1, t2,......., t7. And I labelled every single vertex: A, B, ......, E. Now I know the sume of the forces on every vertex must add up to 0. And well the algebra is there as you can see. But that doesn't seem to work for me. Because that would make T1 = 0, which doesn't make a whole lot of sense. So I am thinking I am missing some force(s). Normal force perhaps?
Thanks for any help.
Here is the assignment question: http://members.shaw.ca/KingofGods/Phys24421.jpg
And here is my attempt: http://members.shaw.ca/KingofGods/Phys24422.jpg
Thanks for any help.
Here is the assignment question: http://members.shaw.ca/KingofGods/Phys24421.jpg
And here is my attempt: http://members.shaw.ca/KingofGods/Phys24422.jpg