Răspuns:
răspunsul corect b) 3R
F=k×M×m/R^2
K =constanta gravitationala = 6,674×10-11Nm^2/kg^2
F=m×a
F=m×a=k×M×/R^2
a=g=kM/R^2
g^1=kM/(R+X)^2
(kM/R^2)/(kM/(R+X)^2=16
(R+X)^2/R^2=16
(R+X)^2/R^2=16
R+X/4=4
R+X=4R
X=4R-R=3R
Explicație:
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