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!

How to calculate v=wr?

  1. Sep 16, 2015 #1
    Hi!
    seems crazy! but what if there is vx and vy?r is it a vector?
    w*r can be a cross product?
     
  2. jcsd
  3. Sep 16, 2015 #2

    mathman

    User Avatar
    Science Advisor

    It would help if you defined your symbols.
     
  4. Sep 16, 2015 #3

    berkeman

    User Avatar

    Staff: Mentor

    This wikipedia article should help: https://en.wikipedia.org/wiki/Angular_velocity

    (see the part about particle motion in 3 dimensions...) :smile:
     
  5. Sep 16, 2015 #4
    yes, yes, means that v=wr gives v in one dimension, right!
    I want to calculate relative velocity, v1 = v + wr - ( v' + w'r' ) ; since that v is in 2d(v for x and y in euclidean space, as a vector velocity);
     
  6. Sep 16, 2015 #5

    berkeman

    User Avatar

    Staff: Mentor

    But the wikipedia page also shows the vector equation:

     
  7. Sep 17, 2015 #6
    isn't it like:
    v=w*r.perpendicular();
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook




Loading...