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: Question on Position Vectors

  1. May 27, 2009 #1
    1. The problem statement, all variables and given/known data

    A position vector (between the origin and point (5,2,3) is expressed as r=5(x hat) + 2(y hat) + 3(z hat). Express vector in cylindrical coordinates.

    RHO = SQRT(5^2 + 2^2)
    FIE = tan-1(y/x)

    Clearly, RHO = 5.385, FIE = 21.8, and Z=3.

    The answer is given is only 5.385(RHO hat) + 3(z hat)

    What is the FIE not included in the final answer?
  2. jcsd
  3. May 27, 2009 #2


    User Avatar

    In this case, the vector points from the origin. Hence, there is no PHI component, which would be perpendicular to that vector.
  4. May 27, 2009 #3
    Aha!! Thank you
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook