College Physics ›› 2017, Vol. 36 ›› Issue (2): 28-33.doi: 10.16854 /j.cnki.1000-0712.2017.02.008
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SHU Xin-wen,XU Xin-sheng,YAO Guan-xin,HOU Chang-jian
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Abstract: The dynamics model and the motion of string-bound two-body particles are studied.By using the Taylor series expansion method and the Runge- Kutta numerical method,the approximate and numerical solution of differential equations are obtained,respectively.Calculations of the dynamic equation give the evolution of position vector as a function of time,motion trajectory and phase diagrams. The motion of particle depends on the initial position and transverse velocity.For a larger or smaller initial transverse velocity,the motion is non-linear oscillation. There is a critical initial velocity at which the two-body system is in mechanical equilibrium,and will perform harmonic vibration under small perturbation.The results are valuable for teaching and research on the mechanics problems of micro-vibrations.
Key words: string - bound, non - linear oscillations, numerical solution, analytical solution, central force
SHU Xin-wen,XU Xin-sheng,YAO Guan-xin,HOU Chang-jian. Study of motion of string-bound two-body particles[J].College Physics, 2017, 36(2): 28-33.
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URL: https://dxwl.bnu.edu.cn/EN/10.16854 /j.cnki.1000-0712.2017.02.008
https://dxwl.bnu.edu.cn/EN/Y2017/V36/I2/28
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