摘要
如果一组独立变量及其时间变化率能够完全描述体系的任一运动状态,这组独立变量就可取为广义坐标,否则将出现错误的结论.
When the independent variables and their derivatives to time can completely determine all motion states of system of mass points,they may be chosen as the generalized coordinates in analytic mechanics, otherwise some false conclusions will arise.
关键词
广义坐标
广义速度
虚功原理
拉格朗日方程
generalized coordinates
generalized velocity
principle of virtual work
Lagrange equation
