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## Homework Statement

There are two blocks, one of mass m1 and the other of m2. They are connected by a rope that runs over a pully of radius R and interia I. m2 slides down a frictionless incline at an angle theta, and m1 hangs virtically while being pulled up by the tension in the rope. Find the expression for acceleration.

## Homework Equations

Fnet=m2gsin(theta)-m1g

F/M=a

## The Attempt at a Solution

With the previous two equations I came to this conclusion...

(m2gsin(theta)-m1g)/(m1+m2+I)

The right answer has I/R^2 instead of just I.

I figured it would be just I because the mass of an object is its inertia.

Howwoud I derive the I/R^2?