He is trying to work out its body force.

他正在计算其体积力。

youdao

The pressure gradient and the additional body force due to unsteady motion have been considered in the equations.

方程中考虑了压力梯度及非匀速运动引起的附加质量力。

youdao

The improved body force method is proposed for analyzing interaction behaviors of arbitrary multiple through-cracks under complex loading.

对任意二维型裂纹群，受复合载荷作用时的相互干涉效应，本文提出了改进型体积力法。

youdao

It seemed as if a heavy body was thrown against the table with a force that pushed against his chest.

VOA: special.2009.10.31

If you connect the body to a spring, which is neither compressed nor extended, there's no force acting on it.

如果将一个弹簧连在这个物体上,弹簧既没有被压缩也没有被拉伸,也不会有力作用在它上面

耶鲁公开课 - 基础物理课程节选

So, a massless body cannot have a net force on it, because the acceleration of the rope cannot be infinite.

所以没有质量的物体不会受到力,因为绳子的加速度不可能是无穷大

耶鲁公开课 - 基础物理课程节选

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By simply piercing the surface of the water, you set off an energy force within the body of water that extends outward, impacting anything it touches.

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