oh, i didn't notice that.. you're right, i was using the moment of inertia for a solid sphere. the rod is connected to the left end of the sphere, and the axis is on the right side of the sphere.. like...
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Homework Statement
An object is formed by attaching a uniform, thin rod with a mass of mr = 6.94 kg and length L = 5.56 m to a uniform sphere with mass ms = 34.7 kg and radius R = 1.39 m. Note ms = 5mr and L = 4R.
What is the moment of inertia of the object about an axis at the right edge...