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!

Statics problem equilibrium of a particle 2D

  1. Oct 3, 2015 #1
    1. The problem statement, all variables and given/known data
    In the picture

    2. Relevant equations

    In the picture
    3. The attempt at a solution
    In the picture


    My question is .. Why in Fx has sin and Fy has cos ?


    image.jpg
     
  2. jcsd
  3. Oct 3, 2015 #2

    SteamKing

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    Because of the way the angles are defined and because of how you would find the components of the forces shown. Remember how sine and cosine are defined on a triangle:

    sohcahtoa-all.png
     
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: Statics problem equilibrium of a particle 2D
Loading...