1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Tension Forces

  1. Sep 25, 2013 #1
    1. A block of mas M=17kg is suspended by three ropes as shown in the figure. The two ropes attached to the ceiling each make an angle of 41° with the horizontal

    a)What is the tension T2 in the vertical rope?
    b)What is the tension 1 in the ropes attached to the ceiling?


    2. Relevant equations
    F=ma


    3.
    I made up these formulas:
    Fx=T2cosθ2-T1cosθ1=0
    Fy=T1sinθ1+T2sinθ2+T3=mg or Fy=T1sinθ1+T2sinθ2+T3-mg= 0

    My idea is to rewrite T2 in terms of T1 in the Fx ecuation so then i would substitue to get the value of T2
    I had made a similar problem like this, and using this procedure. but the difference is that Tension 3, how does it affect the problem? it does no affect the Fx forces,, but it does for the Fy, right?
    With this i would get T2

    Would you explain to me?
    THanks!!

    The image is above
     

    Attached Files:

  2. jcsd
  3. Sep 25, 2013 #2
    Please make that angle 41,, the one of the image is 44 thanks
     
  4. Sep 25, 2013 #3
    The Fy equation cannot be correct. If it has T1 & T2, it cannot have mg, because mg applies to the block, and the only other force acting on the block is T3.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Tension Forces
  1. Tension and force (Replies: 1)

  2. Tension and forces (Replies: 1)

  3. Tension Force (Replies: 1)

  4. Tension and Force (Replies: 3)

Loading...