coefficient of friction

简明释义

摩擦系数

英英释义

例句

1.The coefficient of friction 摩擦系数 between rubber and asphalt is relatively high, which helps vehicles stop quickly.

橡胶和沥青之间的摩擦系数 摩擦系数 相对较高，这有助于车辆快速停车。

2.Engineers must calculate the coefficient of friction 摩擦系数 when designing roller coasters to ensure safety.

工程师在设计过山车时必须计算摩擦系数 摩擦系数 以确保安全。

3.The coefficient of friction 摩擦系数 between ice and steel is very low, making it difficult for skates to grip.

冰和钢之间的摩擦系数 摩擦系数 非常低，这使得滑冰鞋很难抓住。

4.When a box is pushed across a floor, the coefficient of friction 摩擦系数 determines how easily it moves.

当一个箱子在地板上被推时，摩擦系数 摩擦系数 决定了它移动的容易程度。

5.A higher coefficient of friction 摩擦系数 means more grip, which is essential for tires in wet conditions.

更高的摩擦系数 摩擦系数 意味着更好的抓地力，这对于湿滑条件下的轮胎至关重要。

作文

Understanding the concept of friction is essential in both everyday life and various scientific applications. One of the key terms associated with friction is the coefficient of friction, which plays a crucial role in determining how objects interact when they come into contact with each other. The coefficient of friction is defined as the ratio of the force of friction between two bodies to the normal force pressing them together. This concept can be applied in numerous scenarios, from driving a car to walking on different surfaces.In practical terms, the coefficient of friction varies depending on the materials involved and their surface conditions. For instance, rubber on dry asphalt has a high coefficient of friction, which is why cars can grip the road effectively and avoid skidding. Conversely, ice has a very low coefficient of friction, making it difficult for vehicles and pedestrians to maintain traction. Understanding these differences is vital for safety and performance in various activities.Moreover, the coefficient of friction can be categorized into two types: static and kinetic. The static coefficient of friction refers to the frictional force that must be overcome to start moving an object at rest, while the kinetic coefficient of friction applies once the object is already in motion. Typically, the static coefficient of friction is higher than the kinetic one, which explains why it often takes more effort to initiate movement than to maintain it.In engineering and design, knowing the coefficient of friction is critical for creating safe and efficient systems. For example, when designing brakes for vehicles, engineers must take into account the coefficient of friction between the brake pads and the rotors to ensure effective stopping power. Similarly, in construction, the coefficient of friction between different building materials can influence stability and safety.Furthermore, the coefficient of friction is not a fixed value; it can change based on several factors such as surface roughness, temperature, and the presence of lubricants. For example, adding oil between two surfaces will typically reduce the coefficient of friction, allowing them to slide past each other more easily. This principle is widely utilized in machinery where lubrication is necessary to minimize wear and tear on parts.In conclusion, the coefficient of friction is a fundamental concept that helps us understand the interactions between surfaces in contact. It is important not only in physics and engineering but also in our daily lives, influencing how we walk, drive, and interact with various materials. By grasping the significance of the coefficient of friction, we can better appreciate the complexities of motion and the importance of safety in our environments. Whether it’s ensuring that our cars stop safely or understanding why we slip on ice, the coefficient of friction is a key player in the dynamics of movement.

理解摩擦的概念在日常生活和各种科学应用中都是至关重要的。与摩擦相关的一个关键术语是摩擦系数，它在确定物体接触时的相互作用中起着至关重要的作用。摩擦系数被定义为两个物体之间的摩擦力与压在它们之间的法向力的比率。这个概念可以应用于许多场景，从驾驶汽车到在不同表面上行走。在实际操作中，摩擦系数会根据所涉及的材料及其表面条件而有所不同。例如，干燥的沥青上的橡胶具有较高的摩擦系数，这就是为什么汽车能够有效地抓住道路并避免打滑。相反，冰的摩擦系数非常低，这使得车辆和行人难以保持牵引力。理解这些差异对于各种活动的安全性和性能至关重要。此外，摩擦系数可以分为两种类型：静态和动态。静态摩擦系数指的是克服将静止物体开始移动所需的摩擦力，而动态摩擦系数适用于物体已经在运动时。通常情况下，静态摩擦系数高于动态摩擦系数，这解释了为什么启动运动通常需要比维持运动更大的努力。在工程和设计中，了解摩擦系数对创建安全和高效的系统至关重要。例如，在设计汽车刹车时，工程师必须考虑刹车片与转子之间的摩擦系数，以确保有效的制动能力。同样，在建筑中，不同建筑材料之间的摩擦系数可能会影响稳定性和安全性。此外，摩擦系数并不是一个固定值；它可以根据表面粗糙度、温度和润滑剂的存在等多个因素而变化。例如，在两个表面之间添加油通常会降低摩擦系数，使它们更容易滑动。这一原理在需要润滑以最小化部件磨损的机械中被广泛利用。总之，摩擦系数是一个基本概念，帮助我们理解接触表面之间的相互作用。它不仅在物理学和工程学中重要，也在我们的日常生活中影响着我们行走、驾驶和与各种材料的互动。通过掌握摩擦系数的重要性，我们可以更好地欣赏运动的复杂性以及我们环境中安全的重要性。无论是确保我们的汽车安全停车，还是理解为什么我们在冰上滑倒，摩擦系数都是运动动态中的关键角色。