Merge branch 'costanti.volta-master-patch-58838' into 'master'

Correction erreur (2.97)

See merge request !34

02_lois_de_newton.md

@@ -1104,7 +1104,7 @@ Solution (La balle qui tourne) #
 
 Nous savons que la balle subit une force 
 $$
-F\mathrm{res}=m a_R=m \frac{v^2}{r}=m\frac{(2\pi r)^2}{T}\frac{1}{r}=\frac{4\pi^2 r}{T}=\frac{4\pi^2}{10}\cong 3.95\N.
+F\mathrm{res}=m a_R=m \frac{v^2}{r}=m\frac{(2\pi r)^2}{T^2}\frac{1}{r}=\frac{4\pi^2 r}{T^2}=\frac{4\pi^2}{100}\cong 0.395\N.
 $$
 
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