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词汇 Inertial Force
分类 英语词汇 英语翻译词典
释义

Inertial Force

英语例句库

It is emphasized that the inertial force is unevadable and not to be ignored in Newtonian mechanics.

摘要论述了在牛顿力学中，惯性力无法避免，也不可忽视。

The horizontal nonhomogeneity of the background wind and pressure fields influences the term of the inertial force in the motion equation and the wind speed at the upper boundary of the PBL.

背景风压场的水平非均匀影响了边界层运动方程中的惯性力项及边界层的上界风速。

中文百科

惯性力 Fictitious force

（重定向自Inertial Force）

惯性力（inertial force）是指当物体加速时，惯性会使物体有保持原有运动状态的倾向，若是以该物体为参照物，看起来就仿佛有一股方向相反的力作用在该物体上，因此称之为惯性力。因为惯性力实际上并不存在，实际存在的只有原本将该物体加速的力，因此惯性力又称为假想力（fictitious force）。它概念的提出是因为在非惯性系中，牛顿运动定律并不适用。但是为了思维上的方便，可以假想在这个非惯性系中，除了相互作用所引起的力之外还受到一种由于非惯性系而引起的力——惯性力。加入惯性力后，牛顿运动定律成立。

英语百科

Fictitious force 惯性力

（重定向自Inertial Force）
Figure 1: Top panel: accelerating car of mass M with passenger of mass m. The force from the axle is (m + M)a. In the inertial frame, this is the only force on the car and passenger. Center panel: an exploded view in the inertial frame. The passenger is subject to the accelerating force ma. The seat (assumed of negligible mass) is compressed between the reaction force –ma and the applied force from the car ma. The car is subject to the net acceleration force Ma that is the difference between the applied force (m + M)a from the axle and the reaction from the seat −ma. Bottom panel: an exploded view in the non-inertial frame. In the non-inertial frame where the car is not accelerating, the force from the axle is balanced by a fictitious backward force −(m + M)a, a portion −Ma applied to the car, and −ma to the passenger. The car is subject to the fictitious force −Ma and the force (m + M)a from the axle. The difference between these forces ma is applied to the seat, which exerts a reaction −ma upon the car, so zero net force is applied to the car. The seat (assumed massless) transmits the force ma to the passenger, who is subject also to the fictitious force −ma, resulting in zero net force on the passenger. The passenger exerts a reaction force −ma upon the seat, which is therefore compressed. In all frames the compression of the seat is the same, and the force delivered by the axle is the same.
Map and car frame perspectives of physical (red) and fictitious (blue) forces for a car driving from one stop sign to the next.
Map and spin frame perspectives of physical (red) and fictitious (blue) forces for an object released from a carousel.
Rain and shell frame perspectives of physical (red) and fictitious (blue) forces for an object that rolls off a cliff.

A fictitious force, also called a pseudo force, d'Alembert force or inertial force, is an apparent force that acts on all masses whose motion is described using a non-inertial frame of reference, such as a rotating reference frame.

The force F does not arise from any physical interaction between two objects, but rather from the acceleration a of the non-inertial reference frame itself. As stated by Iro:
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