Talk:Physics with Calculus/Mechanics/Rotational Motion

This was a fascinating section, written in prose that was far too casual. I also changed the notation a bit, replacing ds by $$d\ell$$. Also: This is far to advanced for a first year physics course. I did like the ideas, and "parked" this discussion here until we can find a home for it: https://en.wikiversity.org/wiki/Physics_equations#Appendix --guyvan52 (discuss • contribs) 05:33, 25 November 2013 (UTC)

Problem with parallel efforts
One way to write the final result for this calculation can be expressed as:

$$ \vec{a} = \kappa \left( \frac{d\ell}{dt} \right) ^2 \hat{\eta} + \frac{d^2\ell}{dt^2} \hat{\tau} $$

I was writing a collection of equations for first year calculus based physics (see https://en.wikiversity.org/w/index.php?title=Physics_equations/Uniform_circular_motion&oldid=1113238) when I found this Wikibook (Calculus with Physics). I copied and edited the calculation for my own project. Then I posted my re-edit on this Wikibook. Then, suspecting that the equation was already posted on Wikipedia, I decided to find it in order to add the page as a reference. What I found is this:

https://en.wikipedia.org/w/index.php?title=Acceleration&oldid=583227440 (See tangential and centripetal acceleration, currently at https://en.wikipedia.org/wiki/Acceleration#Tangential_and_centripetal_acceleration

So now we have the same formula on two efforts to make study materials for calculus based physics (this Wikibook and mine Physics Equations on Wikiversity, and at least two efforts on Wikipedia proper. In the future, I will make a greater effort to find parallel efforts before attempting to write.  --guyvan52 (discuss • contribs) 17:18, 27 November 2013 (UTC)