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Date: Tue, 20 Jun 2023 04:40:59 -0700 (PDT)
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Subject: Re: Princesse Alexandra et prise de masse relativiste
From: Richard Verret <rverret97@gmail.com>
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Le mardi 20 juin 2023 =C3=A0 11:20:16 UTC+2, Richard Hachel a =C3=A9crit=C2=
=A0:
> Le 20/06/2023 =C3=A0 10:52, Richard Verret a =C3=A9crit :=20
> > Le lundi 19 juin 2023 =C3=A0 17:33:46 UTC+2, Richard Hachel a =C3=A9cri=
t :=20
> > Dans mes calculs j=E2=80=99ai postul=C3=A9 la conservation de la masse =
avec la vitesse
> Et tu fais bien.=20
> La masse est un invariant relativiste.=20

Bien s=C3=BBr que la masse propre ne varie pas, mais ce que je suppute c=E2=
=80=99est qu=E2=80=99aux yeux d=E2=80=99un observateur elle diminue avec sa=
 vitesse relative, contrairement =C3=A0 ce que disait la relativit=C3=A9 au=
 d=C3=A9part, =C3=A0 savoir qu=E2=80=99elle augmente.
D=C3=A9j=C3=A0 que Ft =3D k m gt pour la force et l=E2=80=99acc=C3=A9l=C3=
=A9ration tangentielle avec k < 1, le corps deviendrait f=C3=A9tu de paille=
..