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Math Help - dimensions of omega

  1. #1
    Member i_zz_y_ill's Avatar
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    dimensions of omega

    does anyone know why the dimensios of omega(angular speed of a pendulum) is T^-1... I thought that speed has dimensions LT^-1. Surely omega isn't just a function of time. Clearly my thinking is wrong if somebody could conclude why the dimensions are so that would be great!?oh im sorry just found the answer angle/time angle is dimensionless sorry!
    Last edited by i_zz_y_ill; May 19th 2008 at 04:57 AM. Reason: oh im sorry just found the answer angle/time angle is dimensionless sorry!
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by i_zz_y_ill View Post
    does anyone know why the dimensios of omega(angular speed of a pendulum) is T^-1... I thought that speed has dimensions LT^-1. Surely omega isn't just a function of time. Clearly my thinking is wrong if somebody could conclude why the dimensions are so that would be great!?oh im sorry just found the answer angle/time angle is dimensionless sorry!

    Angular speed is degrees or radians per second, but both degrees and radians are in fact dimensionless and so the units of angular velocity/speed are [T]^{-1}.

    RonL
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