frictional force

简明释义

摩擦力

英英释义

例句

1.The frictional force 摩擦力 between your shoes and the ground helps prevent slipping.

你鞋子与地面之间的摩擦力 摩擦力 有助于防止滑倒。

2.The car skidded on the wet road because the frictional force 摩擦力 between the tires and the pavement was reduced.

由于轮胎与路面之间的摩擦力 摩擦力 减少，汽车在湿滑的道路上打滑。

3.In a physics experiment, we measured the frictional force 摩擦力 acting on a sliding block.

在物理实验中，我们测量了作用于滑动块上的摩擦力 摩擦力 。

4.When pushing a heavy box, you need to overcome the frictional force 摩擦力 that resists its movement.

在推动一个重箱子时，你需要克服阻碍其移动的摩擦力 摩擦力 。

5.The frictional force 摩擦力 between the ice skates and the ice allows for smooth gliding.

冰刀与冰面之间的摩擦力 摩擦力 使得滑行变得顺畅。

作文

Friction is a fundamental force that we encounter in our daily lives, yet many people do not fully understand its significance. One of the most important aspects of friction is the concept of frictional force, which refers to the resistance that one surface or object encounters when moving over another. This force plays a crucial role in various physical phenomena and practical applications. In this essay, I will explore the nature of frictional force, its types, and its implications in both everyday life and scientific contexts.To begin with, frictional force arises from the interactions between the microscopic surfaces of two objects in contact. When two surfaces are pressed together, the roughness of each surface creates interlocking points that resist motion. This resistance is what we refer to as frictional force. There are two main types of friction: static friction and kinetic friction. Static friction occurs when an object is at rest and a force is applied, while kinetic friction takes place when an object is already in motion. The maximum value of static friction is generally higher than that of kinetic friction, which is why it often requires more effort to start moving an object than to keep it moving.The significance of frictional force extends beyond mere mechanics. In everyday life, we rely on this force for a variety of tasks. For instance, walking would be nearly impossible without frictional force between our shoes and the ground. It allows us to push off the ground effectively, maintaining our balance and preventing slips. Similarly, vehicles depend on frictional force to accelerate, decelerate, and maintain control on the road. Without adequate frictional force, cars would skid uncontrollably, leading to dangerous situations.In addition to its practical applications, frictional force also plays a significant role in scientific research and engineering. For example, engineers must consider frictional force when designing machinery and structures. The efficiency of machines often hinges on minimizing unwanted friction, which can lead to energy loss through heat generation. On the other hand, certain applications require maximizing frictional force, such as in brake systems where high friction is necessary to stop vehicles safely.Moreover, the study of frictional force has led to advancements in materials science. Researchers are constantly seeking new materials that can either reduce or enhance friction, depending on the application. For instance, lubricants are commonly used to decrease frictional force in engines and moving parts, thereby improving efficiency and longevity. Conversely, in sports equipment, manufacturers aim to create surfaces that maximize frictional force to improve grip and performance.In conclusion, frictional force is a vital concept that influences both our daily lives and technological advancements. Understanding the nature and implications of frictional force allows us to harness its benefits while mitigating its drawbacks. Whether it is in the simple act of walking or the complex design of machinery, frictional force remains an essential element that governs motion and interaction in our world. By appreciating the role of frictional force, we can better navigate the challenges it presents and utilize it to our advantage.

摩擦力是我们日常生活中遇到的一个基本力量，但许多人并未充分理解它的重要性。摩擦力最重要的方面之一是摩擦力的概念，它指的是一个表面或物体在移动时遇到另一个表面的阻力。这种力量在各种物理现象和实际应用中起着至关重要的作用。在这篇文章中，我将探讨摩擦力的性质、类型及其在日常生活和科学背景中的意义。首先，摩擦力源于两个接触物体的微观表面之间的相互作用。当两个表面紧压在一起时，每个表面的粗糙度会产生相互嵌锁的点，从而抵抗运动。这种抵抗就是我们所称的摩擦力。摩擦主要有两种类型：静摩擦和动摩擦。静摩擦发生在物体静止且施加力时，而动摩擦则发生在物体已经在运动时。静摩擦的最大值通常高于动摩擦，这就是为什么启动一个物体往往需要比保持它运动更多的努力。摩擦力的重要性超越了简单的力学。在日常生活中，我们依赖这种力量来完成各种任务。例如，如果没有我们鞋子与地面之间的摩擦力，走路几乎是不可能的。它使我们能够有效地向地面推送，保持平衡并防止滑倒。类似地，车辆依赖摩擦力来加速、减速和保持道路控制。如果没有足够的摩擦力，汽车将会失控滑行，导致危险的情况。除了实际应用之外，摩擦力在科学研究和工程中也发挥着重要作用。例如，工程师在设计机械和结构时必须考虑摩擦力。机器的效率往往取决于最小化不必要的摩擦，这可能导致通过热量产生的能量损失。另一方面，某些应用要求最大化摩擦力，例如在制动系统中，高摩擦是安全停车所必需的。此外，摩擦力的研究促进了材料科学的发展。研究人员不断寻求新材料，以根据应用需求减少或增强摩擦。例如，润滑剂通常用于减少发动机和运动部件中的摩擦力，从而提高效率和使用寿命。相反，在运动器材中，制造商旨在创造最大化摩擦力的表面，以改善抓地力和性能。总之，摩擦力是一个重要的概念，影响着我们的日常生活和技术进步。理解摩擦力的性质和意义使我们能够利用其好处，同时减轻其缺点。无论是在简单的走路行为中，还是在复杂的机械设计中，摩擦力仍然是支配我们世界中运动和相互作用的基本元素。通过欣赏摩擦力的作用，我们可以更好地应对它带来的挑战，并利用它为我们服务。