center of mass

简明释义

质量中心

英英释义

例句

1.To calculate the center of mass 质心, you need to know the mass and position of each part of the object.

要计算center of mass 质心，你需要知道物体每个部分的质量和位置。

2.When throwing a ball, the center of mass 质心 determines its trajectory.

投掷球时，center of mass 质心 决定了它的轨迹。

3.The center of mass 质心 can change if the shape of the object changes.

如果物体的形状发生变化，center of mass 质心 也会改变。

4.In physics, the center of mass 质心 of an object is the point where its mass is evenly distributed.

在物理学中，一个物体的center of mass 质心 是其质量均匀分布的点。

5.In a balanced system, the center of mass 质心 will be directly above the base of support.

在一个平衡的系统中，center of mass 质心 将正好位于支撑基底的正上方。

作文

The concept of the center of mass is fundamental in physics, particularly in the study of mechanics. It refers to the point in an object or system where the mass is evenly distributed, and it plays a crucial role in understanding how objects move and interact with forces. For instance, when analyzing the motion of a swinging pendulum, the center of mass helps us determine the trajectory and stability of the pendulum's swing. In everyday life, we can observe the effects of the center of mass in various situations. Consider a person standing on one leg; their center of mass must be directly above their supporting foot to maintain balance. If the center of mass shifts too far to one side, the person will fall. This principle is not only applicable to humans but also to animals and vehicles. For example, race cars are designed with a low center of mass to enhance stability and reduce the risk of tipping over during sharp turns.Moreover, the center of mass is essential in engineering and design. When constructing buildings or bridges, engineers must consider the center of mass of the structure to ensure it can withstand external forces such as wind or earthquakes. A well-designed structure will have its center of mass positioned in a way that provides stability and safety.In the realm of sports, athletes often train to understand their center of mass to improve their performance. Gymnasts, for example, utilize their knowledge of their body’s center of mass to execute flips and twists in the air. By controlling their center of mass, they can achieve greater heights and more complex movements, which are vital for scoring high in competitions.Furthermore, the center of mass is not limited to solid objects; it also applies to systems of particles. In astrophysics, the center of mass of celestial bodies helps scientists understand the gravitational interactions between planets, stars, and galaxies. The orbits of planets around the sun, for instance, can be explained by the gravitational pull exerted at their respective center of mass. This understanding aids in predicting the movements of celestial bodies and is crucial for space exploration.To summarize, the center of mass is a pivotal concept that influences various fields, from physics and engineering to sports and astrophysics. Understanding the center of mass allows us to predict how objects behave under different forces and conditions. Whether it is maintaining balance while standing, designing stable structures, enhancing athletic performance, or understanding the cosmos, the center of mass remains an integral part of our comprehension of the physical world. As we continue to explore and innovate, the importance of the center of mass will undoubtedly persist, guiding our efforts in science and technology.

质心的概念在物理学中是基础，特别是在力学研究中。它指的是物体或系统中质量均匀分布的点，这在理解物体如何运动和与力相互作用时起着至关重要的作用。例如，在分析摆动的摆的运动时，质心帮助我们确定摆的轨迹和稳定性。在日常生活中，我们可以在各种情况下观察到质心的影响。考虑一个人单腿站立；他们的质心必须直接位于支撑脚的正上方才能保持平衡。如果质心偏移到一侧太远，这个人就会摔倒。这个原则不仅适用于人类，也适用于动物和车辆。例如，赛车设计时会考虑低质心，以增强稳定性并减少在急转弯时翻车的风险。此外，质心在工程和设计中也至关重要。在建造建筑物或桥梁时，工程师必须考虑结构的质心，以确保它能够承受外部力量，如风或地震。设计良好的结构将其质心定位在提供稳定性和安全性的方式上。在体育领域，运动员通常训练以了解他们的质心，从而提高他们的表现。例如，体操运动员利用他们对身体质心的知识来在空中执行翻转和扭转。通过控制他们的质心，他们可以达到更高的高度和更复杂的动作，这对在比赛中获得高分至关重要。此外，质心不仅限于固体物体；它也适用于粒子系统。在天体物理学中，天体的质心帮助科学家理解行星、恒星和星系之间的引力相互作用。例如，行星围绕太阳的轨道可以通过它们各自的质心施加的引力来解释。这种理解有助于预测天体的运动，对于太空探索至关重要。总之，质心是一个关键概念，影响着从物理学、工程学到体育和天体物理学等各个领域。理解质心使我们能够预测物体在不同力量和条件下的行为。无论是保持站立平衡、设计稳定的结构、提升运动表现，还是理解宇宙，质心始终是我们理解物理世界的重要组成部分。随着我们继续探索和创新，质心的重要性无疑会持续存在，指导我们在科学和技术方面的努力。