# Rotational Dynamics Problem

1. Dec 5, 2012

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).

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

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2. Dec 5, 2012

### Basic_Physics

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.