second law of motion

A Method of Verifying Newton ′ s Second Law of Motion

验证牛顿第二定律的一种方法

According to the Newton's second law of motion, the law of conservation of mass, and Bingham plastic flow equation of slurry, as well as under top cement pulsation, the mathematical models of one dimensional pressure pulse propagation downwards in the cement column was established.

文中根据牛顿定律、质量守恒定律及水泥浆的宾汉塑性流变性，在顶部水泥脉冲振动作用下，建立了水泥浆中，一维压力传播的波动方程的数学模型。

It follows from the principle of relativity that Newton's second law of motion, although fundamental in classical mechanics, only has an approximate and by no means complete validity.

由相对论原理可知，牛顿运动第二定律尽管是古典力学中的基本原理，但只是近似的，而绝不是完全正确的。

The mathematic model of vector gravimetry is deduced from the second motion law of Newton within inertial frame, according to which a basic principle of computing vector gravity using position and velocity information deduced from strap-down INS and GPS is described.

根据牛顿第二运动定律，详细导出了矢量重力测量的数学模型，介绍了用捷联惯导系统和卫星定位系统测量重力矢量的基本方法。

The concept of space time in classical mechanics is equal to that in Newton's second law of motion in essence.

经典力学的时空观本质是牛顿第二定律的时空观。