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

F Vector is parallel to r vector formula ?

  1. Feb 23, 2014 #1
    Hi everyone

    ( the force vector parallel to the position vector r ) = Force vector* (r vector / r)

    I don't know how did they find this relation ?
    it seems to me they multiplied F hat by the unit vector ?
    why ??
    I am just confused about it

    any idea ??
    Last edited: Feb 23, 2014
  2. jcsd
  3. Feb 23, 2014 #2
    F parallel hat= (F hat) * (r hat / r)
  4. Feb 23, 2014 #3

    the projection of v into the direction of u

    0k that's why :)

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Vector parallel vector Date
One 160 kW motor vs two 129 kW motors Feb 19, 2018
Why are the traction vectors on each surface independent? Apr 5, 2017
Aerospace Rocket Engine: Centripetal Force to Vector thrust Mar 3, 2017
Vector Loop Method Need Help Oct 26, 2016
Vector Motor Oct 22, 2016