kinetic friction

简明释义

动摩擦

英英释义

例句

1.The kinetic friction (动摩擦力) between the sled and the snow affects how fast it can slide down the hill.

雪橇与雪之间的动摩擦力影响它滑下山坡的速度。

2.The kinetic friction (动摩擦力) experienced by a block sliding down an incline can be calculated using its weight and the angle of the slope.

滑下斜坡的块体所经历的动摩擦力可以通过其重量和斜坡角度计算得出。

3.When a car is skidding on the road, the force that slows it down is due to kinetic friction (动摩擦力) between the tires and the pavement.

当一辆车在路面上打滑时，减速的力量是由于轮胎与路面之间的动摩擦力。

4.Engineers must consider kinetic friction (动摩擦力) when designing moving parts in machinery.

工程师在设计机器中的移动部件时必须考虑到动摩擦力。

5.In a physics lab, we measured the kinetic friction (动摩擦力) of different materials sliding against each other.

在物理实验室，我们测量了不同材料相互滑动时的动摩擦力。

作文

Kinetic friction plays a crucial role in our daily lives, influencing everything from how we walk to how vehicles move on the road. This force arises when two surfaces slide against each other, and it is essential to understand its principles for various applications in physics and engineering. The concept of kinetic friction (动摩擦力) can be observed in numerous scenarios, highlighting its significance in both theoretical and practical contexts.To begin with, let's define kinetic friction (动摩擦力). It is the force that opposes the relative motion between two objects in contact when they are sliding past each other. The magnitude of this force depends on several factors, including the nature of the surfaces in contact and the normal force acting between them. Generally, the coefficient of kinetic friction, which is a dimensionless value, characterizes the frictional properties of the materials involved.In our everyday experience, we encounter kinetic friction (动摩擦力) when we push objects across a surface. For instance, when you slide a book across a table, the resistance you feel is due to the kinetic friction (动摩擦力) between the book and the table. This resistance can vary depending on the materials; a wooden book sliding on a wooden table will experience different frictional forces compared to a plastic book on a glass table. Understanding these differences is vital for designing products and optimizing performance.Moreover, kinetic friction (动摩擦力) is also a critical factor in the automotive industry. When a car accelerates, the tires must overcome the kinetic friction (动摩擦力) with the road surface to gain speed. The effectiveness of this friction determines how well the vehicle can grip the road, especially during turns or sudden stops. Engineers strive to enhance tire materials and tread designs to maximize kinetic friction (动摩擦力) without compromising safety.Another interesting application of kinetic friction (动摩擦力) is in sports. Athletes often rely on the friction between their shoes and the playing surface to enhance their performance. In sports like basketball or soccer, having the right amount of kinetic friction (动摩擦力) is essential for quick movements and stability. Coaches and athletes analyze these interactions to improve techniques and equipment, demonstrating how physics directly impacts athletic success.However, it is important to note that while kinetic friction (动摩擦力) is beneficial in many scenarios, it can also lead to inefficiencies. For example, in machinery, excessive kinetic friction (动摩擦力) can result in wear and tear, leading to increased maintenance costs and energy consumption. Engineers must carefully design systems to minimize unwanted friction through lubrication and material selection, showcasing the delicate balance between utilizing and mitigating kinetic friction (动摩擦力).In conclusion, kinetic friction (动摩擦力) is an essential physical phenomenon that affects various aspects of our lives. From walking and driving to sports and engineering, understanding this force allows us to harness its benefits while minimizing its drawbacks. As we continue to explore the principles of physics, the study of kinetic friction (动摩擦力) will remain a fundamental topic, bridging the gap between theory and real-world applications.

动摩擦力在我们的日常生活中发挥着至关重要的作用，影响着我们走路的方式以及车辆在道路上的运动。这个力是在两个表面相互滑动时产生的，理解其原理对物理学和工程学的各种应用至关重要。动摩擦力的概念可以在许多场景中观察到，突显了它在理论和实践中的重要性。首先，让我们定义一下动摩擦力。它是抵抗两个接触物体之间相对运动的力量，当它们相互滑动时，产生这种力量。这个力量的大小取决于几个因素，包括接触表面的性质和它们之间的法向力。通常，动摩擦系数是一个无量纲值，用于表征所涉及材料的摩擦特性。在我们的日常体验中，当我们推动物体在表面上滑动时，会遇到动摩擦力。例如，当你把一本书滑过桌子时，你感受到的阻力就是由于书本与桌子之间的动摩擦力。这种阻力可能会因材料而异；一本木制书籍在木制桌子上滑动的摩擦力与一本塑料书籍在玻璃桌子上滑动的摩擦力会有所不同。理解这些差异对于设计产品和优化性能至关重要。此外，动摩擦力在汽车工业中也是一个关键因素。当汽车加速时，轮胎必须克服与路面之间的动摩擦力以获得速度。这种摩擦的有效性决定了车辆在转弯或突然停车时的抓地力。工程师努力提高轮胎材料和胎面设计，以最大化动摩擦力而不妨碍安全。另一个有趣的动摩擦力应用是在体育运动中。运动员往往依靠他们的鞋子与比赛表面之间的摩擦来增强表现。在篮球或足球等运动中，适当的动摩擦力对于快速移动和稳定性至关重要。教练和运动员分析这些相互作用，以改善技术和装备，展示了物理学如何直接影响运动成功。然而，需要注意的是，虽然动摩擦力在许多场景中是有益的，但它也可能导致效率低下。例如，在机械设备中，过度的动摩擦力可能导致磨损，从而增加维护成本和能耗。工程师必须仔细设计系统，通过润滑和材料选择来最小化不必要的摩擦，展示了在利用和减轻动摩擦力之间微妙的平衡。总之，动摩擦力是一个重要的物理现象，影响着我们生活的各个方面。从走路、驾驶到体育运动和工程，理解这个力使我们能够利用其好处，同时最小化其缺点。随着我们继续探索物理原理，动摩擦力的研究将始终是一个基础主题，弥合理论与现实应用之间的差距。