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Commit 8fc2977f authored by Claude Meny's avatar Claude Meny
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Update textbook.fr.md

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    12.temporary_ins/40.classical-mechanics/30.n3/07.coherence/textbook.fr.md
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    ...@@ -603,9 +603,10 @@ Identification et écriture des forces qui s'appliquent sur le pendule : ...@@ -603,9 +603,10 @@ Identification et écriture des forces qui s'appliquent sur le pendule :
    Poids $`\overrightarrow{P_M}`$ du corps M : Poids $`\overrightarrow{P_M}`$ du corps M :
    $`\begin{align}\overrightarrow{P_M}&=-\,m\,g\overrightarrow{e_z}\\ $`\begin{align}
    \overrightarrow{P_M}&=-\,m\,g\,\overrightarrow{e_z}\\
    \\ \\
    &=\,m\,g\,\big(\cos\theta\;\overrightarrow{e_{\rho}}}-\sin\theta\;\overrightarrow{e_{\theta}}\big)\\ &=\,m\,g\,\big(\cos\theta\;\overrightarrow{e_{\rho}}-\sin\theta\;\overrightarrow{e_{\theta}}\big)\\
    \\ \\
    &=\,m\,g\,\cos\theta\;\overrightarrow{e_{\rho}}-\,m\,g\,\sin\theta\;\overrightarrow{e_{\theta}} &=\,m\,g\,\cos\theta\;\overrightarrow{e_{\rho}}-\,m\,g\,\sin\theta\;\overrightarrow{e_{\theta}}
    \end{align}`$ \end{align}`$
    ......
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