reaction force

简明释义

反酌力

英英释义

例句

1.When a person jumps off a diving board, the board exerts a downward force on the person, and the person experiences an equal and opposite reaction force (反作用力) pushing them upward.

当一个人从跳板上跳下时，跳板对这个人施加向下的力，而这个人感受到一个等于且相反的反作用力，将他们推向上方。

2.The reaction force (反作用力) generated by the swimmer pushing against the pool wall helps them to propel forward.

游泳者在池壁上用力推时产生的反作用力帮助他们向前推进。

3.In rocket propulsion, the engines push down against the ground, creating a reaction force (反作用力) that propels the rocket upward.

在火箭推进中，发动机向下推地面，从而产生一个反作用力，将火箭向上推进。

4.When you push against a wall, the wall pushes back with an equal and opposite reaction force (反作用力).

当你推墙时，墙会以一个等大且相反的反作用力回推你。

5.In a car crash, the impact creates a reaction force (反作用力) that can cause injuries to the passengers.

在车祸中，冲击产生的反作用力可能导致乘客受伤。

作文

In the realm of physics, the concept of force is fundamental to our understanding of how objects interact with one another. Among these forces, the term reaction force (反作用力) plays a crucial role in explaining the behavior of objects under various conditions. The law of action and reaction, formulated by Sir Isaac Newton as his third law of motion, states that for every action, there is an equal and opposite reaction force (反作用力). This means that whenever one object exerts a force on another, the second object exerts a force of equal magnitude but in the opposite direction back onto the first object.To illustrate this principle, consider the example of a person jumping off a small boat into the water. As the individual pushes down on the boat to propel themselves upward, the boat experiences a downward force due to the person's weight. According to Newton's third law, the boat reacts to this downward force by exerting an upward reaction force (反作用力) on the person. This interaction not only allows the person to jump out of the boat but also causes the boat to move slightly in the opposite direction, demonstrating how forces are interconnected.Another everyday example of reaction force (反作用力) can be observed when walking. When a person walks, their foot pushes against the ground. In response, the ground exerts an equal and opposite reaction force (反作用力) against the foot. This force propels the person forward, allowing them to move. Without this reaction force (反作用力), it would be impossible to walk or run effectively, as there would be no force to push against.The concept of reaction force (反作用力) is not limited to simple interactions; it is also essential in understanding complex systems. For instance, in engineering applications, the design of structures such as bridges and buildings must account for various forces acting upon them, including reaction forces (反作用力). When a load is applied to a structure, the materials within that structure respond by generating reaction forces (反作用力) to maintain equilibrium and ensure stability. Engineers must carefully calculate these forces to prevent structural failure and ensure safety.Moreover, the study of reaction forces (反作用力) extends into the realm of aerodynamics and rocket science. When a rocket launches, it expels gas downwards at high speed. The reaction force (反作用力) generated by this action propels the rocket upwards, illustrating the principle of action and reaction in a powerful way. This phenomenon is crucial for the successful launch and operation of spacecraft, showcasing how understanding reaction forces (反作用力) can lead to advancements in technology and exploration.In conclusion, the concept of reaction force (反作用力) is integral to our understanding of physics and the interactions between objects. Whether it is in everyday activities like walking or in complex engineering and scientific applications, reaction forces (反作用力) govern the movement and stability of systems. By grasping this fundamental principle, we can better appreciate the dynamics of the world around us and the forces that shape our experiences.

在物理学领域，力的概念是我们理解物体如何相互作用的基础。在这些力中，术语反作用力在解释物体在各种条件下的行为中起着至关重要的作用。艾萨克·牛顿爵士所制定的运动第三定律指出，每一个作用都有一个相等且相反的反作用力。这意味着每当一个物体对另一个物体施加力时，第二个物体会对第一个物体施加大小相等但方向相反的力。为了说明这一原理，考虑一个人从小船上跳入水中的例子。当个人向下推船以推动自己向上时，由于这个人的重量，船会体验到一个向下的力。根据牛顿的第三定律，船对这个向下的力做出反应，向个人施加一个向上的反作用力。这种相互作用不仅允许个人从船上跳出，而且还导致船稍微朝相反方向移动，展示了力量是如何相互关联的。另一个日常生活中观察到的反作用力的例子可以在走路时看到。当一个人走路时，他们的脚向地面施加压力。作为回应，地面对脚施加一个相等且相反的反作用力。这个力推动人向前，使他们能够移动。如果没有这个反作用力，走路或跑步将变得不可能，因为没有力可以推动。反作用力的概念不仅限于简单的相互作用；它在理解复杂系统中也是必不可少的。例如，在工程应用中，桥梁和建筑物等结构的设计必须考虑各种作用于它们的力，包括反作用力。当负载施加到结构上时，该结构内的材料通过产生反作用力来响应，以维持平衡并确保稳定性。工程师必须仔细计算这些力，以防止结构失效并确保安全。此外，对反作用力的研究延伸到气动学和火箭科学的领域。当火箭发射时，它以高速度向下喷射气体。由这一行为产生的反作用力推动火箭向上，生动地展示了作用与反作用的原理。这一现象对于航天器的成功发射和操作至关重要，展示了理解反作用力如何促进技术和探索的进步。总之，反作用力的概念是我们理解物理学和物体之间相互作用的核心。无论是在日常活动如走路，还是在复杂的工程和科学应用中，反作用力支配着系统的运动和稳定性。通过掌握这一基本原理，我们可以更好地欣赏周围世界的动态以及塑造我们经历的力量。