theorem of kinetic energy

The kinetic energy theorem of mass variable system is derived from the kinetic equation of mass variable body. The practical value of it is pointed out using an example.

从变质量物体的动力学方程出发，推导出变质量系统的动能定理。指明其实用价值，并举例加以说明。

It is found that basic dynamic equations can be derived from the Chenzi theorem, including three Newton's laws of motion, kinetic energy theorem, the law of motion of the center of mass.

从陈子定理可以推导出质点动力学的基本定理，包括牛顿运动三定律，动能定理，质心运动定理。

The kinetic energy theorem of mass variable system is derived from the kinetic equation of mass variable body.

从变质量物体的动力学方程出发，推导出变质量系统的动能定理。