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Tension Force between two rotating masses on strings

  1. Oct 12, 2016 #1
    1. The problem statement, all variables and given/known data

    Two balls with masses m1=0.3 kg and m2=0.7 kg are connected by massless strings with lengths L1=0.2 m and L2=0.26 m, as shown. The arrangement of strings and masses rotates at constant angular frequency ω=57.6 radians/s around a fixed pivot point. Find the two tensions, T1 and T2. There is no gravity in this problem.

    2. Relevant equations

    So, here are equations I believe are relevant.


    So, I'm struggling trying to find the different tensions between the two strings. I think that the radius will change depending on which ball you are looking at and therefore the tensions will be different.

    Any tips?
  2. jcsd
  3. Oct 12, 2016 #2


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    Hi NarcolepticPig and welcome to PF.:welcome:

    Can you find the tension in one string? If so, then you can find the tension in the other string the same way. Use the equations that you have posted. I am not sure what the third equation ω = rad*r means.
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