2014•Acta Physica SinicaOpen access
Noether symmetry and Mei symmetry of a discrete holonomic mechanical system with variable mass
Wang Fei-Fei, Fang Jian-Hui, Wang Ying-Li, Xu Rui-Li
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Abstract
This paper studies the Noether symmetry and Mei symmetry of a discrete holonomic mechanical system with variable mass. Firstly, by the difference discrete variation approach, the discrete equations of motion of the system are established. Secondly, the definitions of Noether symmetry and Mei symmetry are given, and the conditions under which the Noether conserved quantity can be induced by Noether symmetry and Mei symmetry are obtained. Finally, an example is discussed to illustrate these results.