anonymous
  • anonymous
Consider the 639 N weight held by two cables shown below. The left-hand cable had ten- sion T2 and makes an angle of 53 with the ceiling. The right-hand cable had tension T1 and makes an angle of 49 with the ceiling.a) What is the tension in the cable labeled T1 slanted at an angle of 49? b.) And T2 slanted at 53...
Physics
  • Stacey Warren - Expert brainly.com
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schrodinger
  • schrodinger
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anonymous
  • anonymous
ok so I have actually worked it out.... once again i need a checker to make sure i did everything right....
anonymous
  • anonymous
Need help?
anonymous
  • anonymous
ok I got Im calling The straight Vector starting at the points where T1 and T2 meet T3. And t3 = m * g = 639N * 9.8 m/s^2= this = 6262.2 N* m /s^2 (im not for sure about the units thats what i need help on) Fx = -T1 cos 53 + T2cos 49 = 0 Fy = T1 sin 53 + T2 sin 49 - 6262.2 = 0

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anonymous
  • anonymous
o kk
anonymous
  • anonymous
.8 T1 + .75T2 = 6262.2 T2 = .6T1/.66
anonymous
  • anonymous
http://lmgtfy.com/?q=Consider+the+639+N+weight+held+by+two+cables+shown+below.+The+left-hand+cable+had+ten-+sion+T2+and+makes+an+angle+of+53
anonymous
  • anonymous
look at the link krystal see if that helps u kk?
anonymous
  • anonymous
t1=4231.22 then plug that in to the other formula T2=3836.31
anonymous
  • anonymous
Hey krystal. Your methodology looks solid. Remember that a Newton has units\[\rm [N] = \left [ kg \cdot m \over s^2 \right]\]Therefore, you don't need to multiply 639N by gravity because in this case Newton is a measure of weight not mass.
anonymous
  • anonymous
so gravity was not needed in this case....
anonymous
  • anonymous
well its always needed :)
anonymous
  • anonymous
Nope. \[{Newtons \over gravity} = mass\]
anonymous
  • anonymous
so dont multiply divide.....ok
anonymous
  • anonymous
No no no. We want units of Newtons. Sorry for the confusion. Remember that Newton is the unit of force, which is what we are considering here.
anonymous
  • anonymous
okokokko. :) thanks
anonymous
  • anonymous
When we say that something weight xxx N, it has already been multiplied by gravity. In other cases, we are given mass and we multiply by gravity to get the weight. Here that has been done for you.

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