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## Homework Statement

A mass (M1 = 5.0 kg) is connected by a light rope to a mass (M2 = 4.0 kg) which slides on a smooth surface, as shown in the figure. The pulley (radius = 0.20 meter) rotates about a frictionless axle. The acceleration of M2 is 3.5 m/s2. What is the moment of inertia of the pulley?

https://ce.byu.edu/courses/univ/694820121006/media/l10g8.gif

## Homework Equations

I=mr^2

## The Attempt at a Solution

I have no references in my textbook as to how to approach this sort of problem. I'm not sure where I should even begin.