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Homework Help: Rotational Dynamics Problem

  1. Dec 5, 2012 #1
    Hi friend I am really getting big problem in solving this question which is related to Rotational dynamics. Please help me in solving this. I will be heartily thankful to u all guys.

    The question is as follows :


    https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-ash3/549594_2636991701343_1266262284_n.jpg



    I am always getting the answer as Option (a) But the answer of this question is (d).

    I am attaching all the attempts as an jepg image along with it. Please friends go through it and Please help me.

    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     

    Attached Files:

  2. jcsd
  3. Dec 5, 2012 #2
    The axis of rotation is not located at the middle of the disc. This can be seen from the fact that the velocities are not perpendicular to a line drawn from the centre of the disc. Use the fact that the speeds are tangential to the circular paths that A and B follow about the axis of rotation to locate the position of the axis of rotation.
     
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