摘要
基于质点自由下落和上抛在非惯性系下的动力学微分方程,得到质点坐标的精确解,然后获得两类问题的东西方向偏移量.得到了动能和势能的表达式,验证了运动过程中机械能守恒的特点.算例讨论了不同初始高度和不同初始速度下的偏移量值.
Based on the dynamic differential equations of a free-falling particle and an upward casting particle in the non-inertial system, the accurate solutions of the particle＇ s coordinates are obtained.Then the eastward and westward drift for the two problems are obtained. Expressions of the kinetic energy and potential energy are also obtained. It is demonstrated that the mechanical energy conserves to a constant during the movement. In the numerical examples, we discuss the values of drift with different initial height or initial velocity.
出处
《大学物理》
北大核心
2017年第4期12-14,21,共4页
College Physics
关键词
自由下落质点
上抛质点
非惯性系
偏移量
机械能
free-falling particle
up-casting particle
the non-inertial system
drift value
mechanical energy
