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: Virtual Work-very confused about the sign conventions

  1. Nov 24, 2011 #1

    doubled

    User Avatar

    The problem statement is "each of the four uniform links has a mass m. determine the horizontal force P required to hold them in place in the vertical plane as shown." I attached the solution, but I don't get when a force causes a +/- virtual work.
     

    Attached Files:

    doubled, Nov 24, 2011
  2. jcsd
    Phys.org - latest science and technology news stories on Phys.org
  3. Nov 24, 2011 #2

    TaxOnFear

    User Avatar

    Erm, I'm not sure how work would come into this problem? What exactly are you asking?
     
    TaxOnFear, Nov 24, 2011
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook