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23 Nov 2019
<p>A slender rod of mass M and length L is welded to the surface of a thin-walled, hollow sphere. The sphere has mass 8M and radius L/2. The rod points radially outward from the sphere. In terms of M and L, give the moment of inertia of the composite object about an axis that passes through the center of the sphere and is perpendicular to the rod.</p>
<p>A slender rod of mass M and length L is welded to the surface of a thin-walled, hollow sphere. The sphere has mass 8M and radius L/2. The rod points radially outward from the sphere. In terms of M and L, give the moment of inertia of the composite object about an axis that passes through the center of the sphere and is perpendicular to the rod.</p>