Thanks for integral, he made the potential.pdf analyse for an analytical mechanic but i still have 2 questions,(adsbygoogle = window.adsbygoogle || []).push({});

1- Why does the lenght up between the tengency point and top of (h) equals:

[tex]\ell + r\theta[/tex] ?????????

2- Why the kinetic energy here equals:

[tex]T = \frac{1}{2} m(\ell + r\theta)^2 \dot{\theta}^2[/tex] ???

I mean why we replaced R with [tex]\ell + r\theta[/tex] in the polar coordinates?

Thanks,

TheDestroyer

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# Damn analytical mechanics (2)

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