1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: Homework problem need help!

  1. Mar 2, 2010 #1
    1. The problem statement, all variables and given/known data
    A package of mass m hangs from a short chord that is tied to the wall via cord 1 and to the ceiling via cord 2. Cord 1 is at an angle 40 degrees with the horizontal cord two is at an unknown angle.
    -For what value of the unknown angle of cord two is the tension minimized?
    -In terms of mg, what is the minimum tension in cord 2?


    2. Relevant equations



    3. The attempt at a solution
    mg= FT1 +FT2. I attempted to find the minimum tension first, but honestly I have no idea where to start
     
  2. jcsd
  3. Mar 3, 2010 #2

    ideasrule

    User Avatar
    Homework Helper

    First, draw a free-body diagram for every mass. Draw out all forces and write down Newton's second law for both the x and the y components.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook