The object of the figure below has 2 disks attached on both sides through and axel of negligible mass. Both disks of mass M. I need to find the linear acceleration of this object knowing there exists a tension T on the cord.
The Attempt at a Solution:[/B]
First we know that :
But the solution of the exercise is : a=(T(R-r))/(3MR)
What am I doing wrong?
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