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!

Torque and equilibrium

  1. Dec 2, 2008 #1
    1. The problem statement, all variables and given/known data
    Here's the picture and I am asked to calculate the tension in the tie rope between the rod and wall


    2. Relevant equations

    3. The attempt at a solution

    The answer key is:


    I just want to know why is it using cos 60 instead of sin 60?
  2. jcsd
  3. Dec 3, 2008 #2
    because the angle created by the rope holding the block and the slanted thinger is 30 degrees (right triangles). So instead of putting sin 30 they just put cos 60 because sin 30 = cos 60. i hope you understand what I'm talking about
    Last edited: Dec 3, 2008
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Torque and equilibrium
  1. Torque and Equilibrium (Replies: 6)

  2. Equilibrium and Torque (Replies: 5)

  3. Torque and Equilibrium (Replies: 4)