A long wooden rod has a square cross section. The rod is placed into a lake. For what range of densities of the rod would it float so that the top surface of the rod remains parallel to the surface of the water?

We received many solutions to our October Challenge, Another wedge issue. We are pleased to recognize the following contributors:

Guidelines for contributors

Many thanks to all contributors and we hope to hear from many more of you in the future!

Note: as always, we would very much appreciate reader-contributed original Challenges.

Boris Korsunsky, Column Editor

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