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Homework Help: Physical dimension

  1. Oct 3, 2007 #1
    hi, I have to find the dimension of the constant C2. I have no problem with finding constant C1. Here is the question, and I appreciate your help.

    the equation is :

    m= [tex]\sqrt{\frac{2t}{C1}}+m cos(\frac{1}{C2}t)[/tex]

    I would like please to understand the solution with knowing the exact answer.
  2. jcsd
  3. Oct 3, 2007 #2


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    Homework Helper

    The argument of a trigonometric function, such as (t/C2) here, is expressed in radians (or degrees), which is considered to be a dimensionless value. Recall that angle is defined on a circle as the arclength along the circle (s) divided by the radius of the circle (R); thus (theta) = s/R , making the radian a dimensionless unit.
  4. Oct 3, 2007 #3

    Doc Al

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    Staff: Mentor

    Hint: Angles are considered dimensionless.
  5. Oct 4, 2007 #4
    Thank you guys for making this is clear to me.
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