Atwood machine problem (speed of mases after they have moved through 1.45 m)

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Homework Statement


An Atwood machine has a mas of 2.50 Kg connected by a light string to a mass of 7.00 Kg over a pulley with a moment of inertia of 0.0652 kg m^2 and a radius of 11.3 cm. If the system is released from rest, what is the speed of the masses after they have moved 1.45 m? (Hint use conservation of energy, including translational & rotational kinetic energy.


Homework Equations





The Attempt at a Solution


I set E(initial)=E(final)
 
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Discussion

Show a picture of the set up. At what direction will the masses move after releasing them from rest? How do you calculate the initial and final energies?

ehild