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**1. Homework Statement**

**2. Homework Equations**

[tex]\Sigma[/tex]

**M**= I[tex]\alpha[/tex]

[tex]\Sigma[/tex]

**F**= m

**a**

**3. The Attempt at a Solution**

I have made an attempt at this problem, it can be seen in the image below. I think I have done everything correctly, but my answer is incorrect. Any help would be greatly appreciated.