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For the cube-rod-sphere combination shown, the density of the material is uniform throughout the object. A thin rod of length, $d$, connects the centers of the two objects, both mass $4M$.
Where is the center of mass?
J. Krehbiel. Created for Albert.io. Copyright 2016. All rights reserved.
Inside the cube.
Closer to the cube than to the sphere.
At the midpoint between the cube and the sphere.
Closer to the sphere than to the cube.