A slender rod of length L and mass m is standing vertically on a rough, level surface with a friction coefficient mu. After it is slightly distrubed, the rod will start to rotate toward the ground. Find a relationship between the friction coefficient mu and the rod orientation angle theta where the rod starts to slip.

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A slender rod of length L and mass m is standing vertically on a rough, level surface with a friction coefficient mu. After it is slightly distrubed, the rod will start to rotate toward the ground. Find a relationship between the friction coefficient mu and the rod orientation angle theta where the rod starts to slip.

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