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"Vector Mechanics for Engineers" by Beer and Johnson. Io, or moment of inertia, is explained in great length as are all of the authors topics and much more.

What would be really nice if all of the programs were made available, either with an accompanying CD or at the web-site. For no better reason, than to show how the program works. If the author doesn't explain what is left out, I have to figure it out. I would rather be experimenting with the code. This is sort of like bying a mini-van, without an engine. Sure you have a vehical that can haul half of a softball team, but until you get the engine, nobody plays any ball.

I'm not a Mac guy, but I agree with their gripe and then some. It should be clearly stated which language and platforms this code is intended for.

In summary, the basic algorithms are good if you understand mechanics. The code needs to be more verbosely documented. And why not have all the code available?