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物理学报 2003
Form invariance for a constrained system with second-order reducible differentia l constraints
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Abstract:
A form invariance for mechanical systems with second_order reducible differential constraints is studied.Two methods to study the form invariance of the systems are used.In the first method,the system is considered as a nonholonomic system with second_order and in the second method it is considered as a system after reduction.The relation between the two methods is obtained.The result proves that it is possible that some symmetries are lost in the second method.