Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Are units tension vectors?

  1. Feb 8, 2007 #1
    1. The problem statement, all variables and given/known data

    See Attachment

    2. Relevant equations

    3. The attempt at a solution

    Im just trying to figure out all of the forces, im kinda confused about the whole [tex]T_{BDC}[/tex] Do i just make these two separate tensions...and then add them together or something? Can someone explain how I should go about doing this? Also concerning the tensions, should I just make them into unit vectors...in i, j, and k components?

    Im kinda new to these problems, any help would be appreciated..


    Attached Files:

  2. jcsd
  3. Feb 9, 2007 #2


    User Avatar
    Science Advisor
    Homework Helper

    The cable BDC is continuous and there is a pulley at D. So the tension in the two parts BD and DC is the same.

    Yes, you will need to resolve the tensions in the strings into their i j k components. That's how you represent the fact that the force must act along the length of the string, not in a different direction.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook