frictional force

简明释义

摩擦力

英英释义

例句

1.When pushing a heavy box, you need to overcome the frictional force 摩擦力 that resists the motion.

在推一个重箱子时，你需要克服阻碍运动的摩擦力 frictional force。

2.In a physics experiment, we measured the frictional force 摩擦力 between different surfaces.

在一项物理实验中，我们测量了不同表面之间的摩擦力 frictional force。

3.The frictional force 摩擦力 between the sled and the snow allows it to slide smoothly down the hill.

雪橇与雪之间的摩擦力 frictional force 使其能够顺利地滑下山坡。

4.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 frictional force 减少，汽车在湿滑的道路上打滑。

5.Increasing the weight of the object will increase the frictional force 摩擦力 acting on it.

增加物体的重量会增加作用于它的摩擦力 frictional force。

作文

Friction plays an essential role in our daily lives, often unnoticed yet profoundly impactful. One of the most critical aspects of friction is the frictional force, which is the resistance that one surface or object encounters when moving over another. This force is not only vital in mechanics but also influences various activities and technologies we engage with every day. Understanding the concept of frictional force can help us appreciate its significance and applications.To begin with, let’s explore what frictional force is. In physics, it is defined as the force that opposes the motion of an object. It arises from the interactions between the surfaces in contact. The amount of frictional force depends on two main factors: the nature of the surfaces involved and the normal force pressing them together. For instance, a rough surface will generate more frictional force than a smooth one, and heavier objects will experience greater frictional force due to the increased normal force.The practical implications of frictional force are vast. Consider driving a car; the tires rely on frictional force to grip the road. Without sufficient frictional force, vehicles would skid uncontrollably, leading to accidents. In this context, engineers design tires with specific tread patterns to optimize frictional force for different weather conditions, ensuring safety and performance.Moreover, frictional force is crucial in sports. Athletes depend on it to enhance their performance. For example, a sprinter needs adequate frictional force between their shoes and the track to propel themselves forward efficiently. If the frictional force is too low, they may slip, losing valuable time and energy. Therefore, understanding and utilizing frictional force can be the difference between winning and losing.In addition to physical activities, frictional force is also significant in machinery and technology. For example, in a factory, machines rely on frictional force to function properly. However, excessive frictional force can lead to wear and tear, causing machinery to malfunction. Engineers must carefully balance frictional force to ensure efficiency while minimizing damage. Lubricants are often used to reduce unwanted frictional force, allowing machines to operate smoothly.Furthermore, the concept of frictional force extends into the realm of science and engineering. In the study of physics, it helps explain various phenomena, such as why objects come to a stop after being pushed. The frictional force between the object and the surface acts against the motion, gradually slowing it down until it halts. This principle is fundamental in understanding motion and forces in our universe.In conclusion, the frictional force is a fundamental concept that affects many aspects of our lives. From ensuring safety in transportation to enhancing athletic performance and enabling machinery to function, its importance cannot be overstated. By understanding the dynamics of frictional force, we can better appreciate the world around us and the intricate balance of forces that govern our everyday experiences. Whether we are aware of it or not, frictional force shapes our interactions with the environment, making it a crucial topic in both physics and practical applications.

摩擦在我们的日常生活中扮演着重要角色，虽然我们常常没有注意到，但其影响深远。摩擦的一个关键方面是摩擦力，即一个表面或物体在另一个表面上移动时遇到的阻力。这种力量不仅在力学中至关重要，还影响着我们每天参与的各种活动和技术。理解摩擦力的概念可以帮助我们欣赏它的重要性和应用。首先，让我们探讨一下摩擦力是什么。在物理学中，它被定义为抵抗物体运动的力量。它源于接触表面之间的相互作用。摩擦力的大小取决于两个主要因素：所涉及表面的性质和将它们压在一起的法向力。例如，粗糙的表面会产生比光滑表面更多的摩擦力，而较重的物体由于法向力的增加，会经历更大的摩擦力。摩擦力的实际意义是广泛的。考虑驾驶汽车；轮胎依赖于摩擦力来抓住道路。如果没有足够的摩擦力，车辆将无法控制地打滑，导致事故。在这种情况下，工程师设计轮胎时会根据不同的天气条件优化摩擦力，以确保安全和性能。此外，摩擦力在体育运动中也至关重要。运动员依赖于它来提高他们的表现。例如，短跑运动员需要鞋子与跑道之间有足够的摩擦力，以有效地推动自己向前。如果摩擦力太低，他们可能会滑倒，失去宝贵的时间和精力。因此，理解和利用摩擦力可能是胜负之间的区别。除了体育活动，摩擦力在机械和技术中也很重要。例如，在工厂中，机器依靠摩擦力正常运转。然而，过度的摩擦力可能导致磨损，导致机器故障。工程师必须仔细平衡摩擦力，以确保效率，同时减少损坏。润滑剂常用于减少不必要的摩擦力，使机器能够顺利运行。此外，摩擦力的概念延伸到科学和工程领域。在物理学研究中，它有助于解释各种现象，例如为什么物体在被推动后会停止。物体与表面之间的摩擦力对抗运动，逐渐减缓其速度，直到停止。这个原理在理解我们宇宙中的运动和力方面是基础。总之，摩擦力是一个基本概念，影响着我们生活的许多方面。从确保交通安全到增强运动表现再到使机器正常运转，其重要性不容小觑。通过理解摩擦力的动态，我们可以更好地欣赏周围的世界以及支配我们日常体验的力量之间的微妙平衡。无论我们是否意识到，摩擦力塑造了我们与环境的互动，使其成为物理学和实际应用中至关重要的话题。