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Aarnae
@Aarnae
May 2019
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Hey, quelqu'un peut-il m'aider pour cet exercice de Physique 1erS ? Merci d'avance !
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Bonsoir,
Soit m la masse du satellite
La force exercée par la Terre :
Ft = G × Mt × m / x²
La force exercée par la Lune :
Fl = G × Ml × m / ( 380 000 000 - x )²
On cherche x tel que Ft = Fl
G × Mt × m / x² = G × Ml × m / ( 380 000 000 - x )²
En simplifiant :
x² / Mt= ( 380 000 000 - x² )/Ml
[Mt+Ml/MtMl]x² = 380 000 000/Ml
x² = 380 000 000 Mt/(Mt+Ml)
2 votes
Thanks 1
Aarnae
Merci beaucoup pour ton aide ! :)
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Verified answer
Bonsoir,Soit m la masse du satellite
La force exercée par la Terre :
Ft = G × Mt × m / x²
La force exercée par la Lune :
Fl = G × Ml × m / ( 380 000 000 - x )²
On cherche x tel que Ft = Fl
G × Mt × m / x² = G × Ml × m / ( 380 000 000 - x )²
En simplifiant :
x² / Mt= ( 380 000 000 - x² )/Ml
[Mt+Ml/MtMl]x² = 380 000 000/Ml
x² = 380 000 000 Mt/(Mt+Ml)