Une barre homogène OB de masse m= 10kg est articulée en O contre un mur ng
dessous. Elle est maintenue en équilibre à l'aide d'un fil inextensible et de masse négligeable.
B
Donnée : mes O AC= 90°; OB=20A; OB=OC= 2m.
1.
Définis le système et représente les forces extérieures qui lui sont appliquées.
2. Détermine:
2.1. La mesure de l'angle OCA;
2.2. Le poids de la barre;
2.3. La valeur de la tension du fil et celle de la réaction du mur.
Answers: 1
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Une barre homogène OB de masse m= 10kg est articulée en O contre un mur ng
dessous. Elle est mainte...
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