theory of machines?
Answers (1)
That is a section in a physics class. You should take the class or at least buy the book so you can learn it completely.
www.amazon.com/s?ie=UTF8&field-keywords=physics
The kindle version is free, and Kindle For PC is also free. Here is another site that searches all free books at amazon.com
www.freebooksifter.com/?n&s=n