We study the non-linear stability of the equilibria corresponding to the motion of a particle orbiting around a finite straight segment. The potential is a logarithmic function and may be considered as an approximation to the one generated by elongated celestial bodies. By means of the Arnold's theorem for non-definite quadratic forms we determine the orbital stability of the equilibria, for all values of the parameter k of the problem, resonant cases included.
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Harbin Inst Technol, Ctr Control Theory & Guidance Technol, Harbin 150006, Peoples R ChinaHarbin Inst Technol, Ctr Control Theory & Guidance Technol, Harbin 150006, Peoples R China
Hou, Mingzhe
Deng, Zongquan
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Harbin Inst Technol, Sch Mechatron Engn, Harbin 150006, Peoples R ChinaHarbin Inst Technol, Ctr Control Theory & Guidance Technol, Harbin 150006, Peoples R China
Deng, Zongquan
Duan, Guangren
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Harbin Inst Technol, Ctr Control Theory & Guidance Technol, Harbin 150006, Peoples R ChinaHarbin Inst Technol, Ctr Control Theory & Guidance Technol, Harbin 150006, Peoples R China