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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)
    Z=3

    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

    Hao

    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
     
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