Update 12.temporary_ins/40.classical-mechanics/30.n3/52.point-energetics-applications/20.overview/cheatsheet.fr.md

Update 12.temporary_ins/40.classical-mechanics/30.n3/52.point-energetics-applications/10.ideal-free-oscillator/20.overview/cheatsheet.fr.md

Update 12.temporary_ins/40.classical-mechanics/30.n3/42.point-dynamics-applications/10.idea-free-oscillator/20.overview/cheatsheet.fr.md