anonymous
  • anonymous
Help please! A weight of 800 pounds us suspended from two cables as shown. What is the tension of the two cables?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
where is the picture?
anonymous
  • anonymous
|dw:1333491465295:dw|
anonymous
  • anonymous
I'm assuming we are making the acceleration of gravity as 9.8 right?

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anonymous
  • anonymous
yes
anonymous
  • anonymous
did you just want the answer or did you want how to do it?
anonymous
  • anonymous
ok so i do believe that the tension in the string that has a 15 degree angle is 3015 and the tension in the other angle should be 4839.5
anonymous
  • anonymous
those being in newtons of course
anonymous
  • anonymous
Can you explain how you got it? I want to understand to do the problem please.
anonymous
  • anonymous
ok so first you have to set up the free body diagram
anonymous
  • anonymous
|dw:1333492692332:dw|
anonymous
  • anonymous
i suck at drawing with a mouse to bear with me
anonymous
  • anonymous
then you have to set up your equations for Net force in both the x plane and another for the y plane
anonymous
  • anonymous
in which case the (Fnet)y =T2sin(35) +T1sin(15) - Fg =0
anonymous
  • anonymous
and the (Fnet)x = T2 cos(35) - T1 cos(15) = 0
anonymous
  • anonymous
since both T2 and T1 are unknowns, we solve for either T1 or T2 in the second equation for (fnet)x
anonymous
  • anonymous
i solved for T1
anonymous
  • anonymous
my bad i solved for T2 in the second equation
anonymous
  • anonymous
so T2 = [T1cos(15)]/cos(35)
anonymous
  • anonymous
then you plug in what you got fro T2 into the first equation for (Fnet)y
anonymous
  • anonymous
the rest is just algebra from there
anonymous
  • anonymous
and my bad while i was explaining i realized that i made a mistake in my signs
anonymous
  • anonymous
so let me recalculate it really quick
anonymous
  • anonymous
oh and i believe that to find the kg from the pounds, you need to convert, then multiply by gravity acceleration to get the newtons
anonymous
  • anonymous
ok so after recalculating i found T1 to be 2473N and T2 to be 5084.1N

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