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: Adding vectors graphiclly

  1. Sep 5, 2008 #1
    I understand how to add vectors graphiclly where i am stuck is how to show this one vector on a graph. Vector A = 80 lb at 60 degrees Vector B = 120lb at -45 degrees. the only part that doest make sense is it is in pounds so what do i do for the magnitudes.
     
  2. jcsd
  3. Sep 5, 2008 #2

    Pythagorean

    User Avatar
    Gold Member

    Pythagorean theorem
     
  4. Sep 6, 2008 #3
    what my question is if it were 2m at 30 degrees i would have no problem. Just scale it down and go from their. what is screwing me up is it is in pounds. how do i draw a line with the magnitude of 80 lbs
     
  5. Sep 6, 2008 #4

    Hootenanny

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Provided that all the vectors are in the same unit, it doesn't matter what that unit is. Simply draw a vector with units of pounds as you would if it has units of meters.
     
    Last edited: Sep 6, 2008
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook