In rotation, force becomes torque, mass becomes moment of inertia, and acceleration becomes angular acceleration.
在旋转时，力变成力矩，质量变成转动惯量，加速度变成角加速度。
That is the analog of force divided by mass equals acceleration, which is d over dt of velocity.
这个类似于，力除以质量等于加速度，就是速度对t的导数。
Well, the earth is going to fall towards the apple — So the force on the earth is the mass of the earth times the acceleration of the earth.
地球也会坠向苹果-，因此地球上的力与地球的质量相等，再乘以地球的加速度。
If I have a huge spring force, the acceleration on a given mass will be high.
若弹力巨大，那么在物体上的，加速度就大。
So now the restoring force doubles and the mass doubles, the acceleration remains the same, the period remains the same.
所以现在回复力加倍，物体质量加倍，加速度不变，周期不变。
The purpose of this laboratory activity is to investigate the relationship between force , mass , and acceleration.
本实验的目的是研究力、质量和加速度之间的关系。
In other words, the 'force' appears to adjust its strength automatically to match the mass of the object, thus always producing the acceleration characteristic of the location.
用另外的话说就是，这个“力”似乎会根据物体的质量来自动调整它的大小，这样就能在某个位置总是产生同样的加速度。
Force is defined as mass multiplied by acceleration.
力是用质量与加速度相乘定义的。
Nothing was said in the preceding discussion regarding the units in which force, mass, and acceleration are to be expressed.
在前面的讨论中，没有提到力、质量和加速度的单位。
This paper presents a new method by using mass and acceleration parameters for balancing inertial force of mechanism.
本文就机构惯性力的平衡计算提出了一种新的方法——质量、加速度参数法。
The acceleration produced by an unbalanced force acting on an object (or mass) is directly proportional to the magnitude of the force and in the direction of the force.
译文：加速度是由于受到作用在物体（或质量）上的非平衡的作用（力）而产生的，其与力的大小成正比，方向沿力的方向。
The shutter is designed as a mass-spring system that moves in response to acceleration force.
光闸设计为一个质量弹簧系统，对加速度力产生响应。
The shutter is designed as a mass-spring system that moves in response to acceleration force.
光闸设计为一个质量弹簧系统，对加速度力产生响应。
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