fictitious force

简明释义

虚拟力

英英释义

例句

1.Physics students often struggle with the concept of fictitious forces in their coursework.

物理学生在课程中常常对虚构力的概念感到困惑。

2.In a merry-go-round, children feel as if they are being pulled outward because of a fictitious force.

在旋转木马上，孩子们感觉自己好像被向外拉，是因为有一种虚构力。

3.The sensation of being pushed outward when turning in a car is due to a fictitious force acting on passengers.

在车内转弯时被推向外侧的感觉是由于作用在乘客身上的一种虚构力。

4.When analyzing motion in a non-inertial frame, one must account for fictitious forces like centrifugal force.

在分析非惯性框架中的运动时，必须考虑像离心力这样的虚构力。

5.In a rotating frame of reference, the apparent acceleration felt by an object is often attributed to a fictitious force.

在一个旋转的参考框架中，物体所感受到的表观加速度通常被归因于一个虚构力。

作文

In the realm of physics, the concept of fictitious force plays a crucial role in understanding motion from different reference frames. A fictitious force is an apparent force that acts on a mass whose motion is described from a non-inertial reference frame. This means that when we observe motion from a perspective that is accelerating, we must account for these forces to accurately describe the behavior of objects. For instance, when you are in a car that suddenly accelerates, you feel as if you are being pushed back into your seat. This sensation is due to the fictitious force that arises because your frame of reference (the car) is not stationary but rather accelerating forward.Understanding fictitious force allows us to analyze various physical situations more effectively. In classical mechanics, we often work within inertial frames of reference where Newton's laws apply directly. However, when we shift to a non-inertial frame—like a rotating carousel or an accelerating vehicle—we introduce fictitious forces to maintain the validity of our equations. For example, when analyzing a child swinging on a merry-go-round, we can describe the child's experience using the concept of centrifugal force, which is a type of fictitious force. Although this force does not exist in an inertial frame, it becomes essential for understanding the child's perspective.The importance of fictitious forces extends beyond simple mechanical systems; it also influences how we perceive and interact with the world. Consider, for example, astronauts in space. When they are in orbit around Earth, they experience weightlessness. This sensation occurs because they are in a non-inertial frame of reference, where the gravitational pull of the Earth creates a fictitious force that counteracts their weight. Consequently, they float freely, and this phenomenon can be explained by recognizing the role of fictitious forces in their environment.Moreover, the study of fictitious forces is not limited to classical mechanics; it also finds applications in fields such as engineering, aviation, and even in the design of amusement park rides. Engineers must consider these forces to ensure safety and functionality in various structures and vehicles. For instance, when designing roller coasters, engineers calculate the effects of fictitious forces to create thrilling yet safe experiences for riders.In summary, the concept of fictitious force is fundamental to our understanding of motion in non-inertial frames of reference. It allows us to reconcile our observations with the laws of physics, providing a clearer picture of how objects behave under various conditions. By acknowledging the presence of fictitious forces, we can better understand complex systems and improve our ability to predict outcomes in both everyday situations and advanced scientific applications. Ultimately, mastering the idea of fictitious force enhances our comprehension of the physical world, illustrating the intricate relationships between motion, force, and perception.

在物理学领域，虚构力的概念在理解不同参考系中的运动中起着至关重要的作用。虚构力是一个表观力，作用于一个质量，其运动是从非惯性参考系描述的。这意味着，当我们从一个加速的视角观察运动时，我们必须考虑这些力，以准确描述物体的行为。例如，当你在一辆突然加速的汽车里时，你会感觉到自己被推回座椅。这种感觉是由于虚构力的存在，因为你的参考系（汽车）并不是静止的，而是向前加速。理解虚构力使我们能够更有效地分析各种物理情况。在经典力学中，我们通常在惯性参考系内工作，在这里牛顿定律直接适用。然而，当我们转向非惯性参考系——如旋转的旋转木马或加速的车辆时，我们引入虚构力以保持我们方程的有效性。例如，在分析一个孩子在旋转木马上摆动时，我们可以使用离心力的概念来描述孩子的体验，这是一种虚构力。虽然这种力在惯性参考系中不存在，但它对于理解孩子的视角变得至关重要。虚构力的重要性不仅限于简单的机械系统；它还影响我们感知和与世界互动的方式。例如，考虑太空中的宇航员。当他们绕地球轨道飞行时，他们体验到失重。这种感觉发生是因为他们处于一个非惯性参考系，在这个参考系中，地球的引力产生了一种虚构力，抵消了他们的重量。因此，他们自由漂浮，这种现象可以通过认识到虚构力在他们环境中的作用来解释。此外，虚构力的研究不仅限于经典力学；它还在工程、航空甚至游乐园设计等领域中找到了应用。工程师在设计各种结构和车辆时，必须考虑这些力，以确保安全和功能性。例如，在设计过山车时，工程师计算虚构力的影响，以为乘客创造刺激而安全的体验。总之，虚构力的概念是我们理解非惯性参考系中运动的基础。它使我们能够调和我们的观察与物理定律，为我们提供更清晰的图景，了解物体在各种条件下的行为。通过承认虚构力的存在，我们可以更好地理解复杂系统，并提高我们预测日常情况和先进科学应用结果的能力。最终，掌握虚构力的概念增强了我们对物理世界的理解，展示了运动、力和感知之间的复杂关系。