变质量运动火箭运动方程的推导

Derivation of Motion Equation of Variable Mass Moving Rocket

摘要: 本文以对动量守恒定律的表述：一个系统不受外力或所受外力之和为零或内力远远大于外力，这个系统总动量的增量为零作为基础，并根据动量定理，运用比较简洁的方式，得出了变质量运动火箭运动方程。文中推导过程将更易于读者对变质量运动方程的理解。

Abstract: In this paper, the law of conservation of momentum is expressed: a system is free from external force or external force as zero or internal force is far greater than external force. The increment of the total momentum of the system is zero as the basis, and the equation of motion of fire and arrow with variable mass motion is obtained in a relatively concise way according to the momentum theorem. The derivation process in this paper will make it easier for readers to understand the equation of motion of variable mass.