
: Re: What software is used by the publishing companies to create diagrams in the introductory physics textbooks? What software is used to create free body diagrams, inclines, springs and so on in
They are almost certainly done in TeX/LaTeX. TeX/LaTeX is not about "less effort", but exactness. It is a programming language for typesetting with a special emphasis on math and equations. TeX has a long history with the academic community in publishing. Explaining TeX and LaTeX is outside the scope of this forum (There is a TeX.stackexchange.com site). You can find some examples of how those types of diagrams are done here:
www.texample.net/tikz/examples/tag/diagrams/
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