1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    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!

Can I use method of sections anywhere?

  1. Nov 28, 2013 #1
    1. The problem statement, all variables and given/known data

    Find the tension in the rope


    2. Relevant equations


    3. The attempt at a solution

    I was wondering whether I could use method of sections in this problem to divide the two systems so that I could find the tension in the rope.

    I have a strong feeling that I won't be able to.. why can't I?
  2. jcsd
  3. Nov 28, 2013 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    You don't need the method of sections. You just need to draw a FBD for the bar BD and then write the equations of static equilibrium.
  4. Nov 28, 2013 #3


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    What you are calling "method of sections" is more generally referred to as "free body diagram(FBD)". You can take a FBD anywhere, but is is simplest to take one that cuts throught the rope, then apply Newton's laws for the equilibrium case (a = ??) .
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted

Similar Threads - method sections anywhere Date
Truss-Method of section Oct 23, 2017
Methods of Section: Truss problem Sep 22, 2015
Static equilibrium, trusses/section method Jul 18, 2015
Truss analysis, section method Jul 15, 2015
Trusses, method of sections Jul 15, 2015