angular speed

简明释义

角速度;

英英释义

例句

1.The wheel of the bicycle rotates with a constant angular speed, which means it turns at a steady rate.

自行车的轮子以恒定的角速度旋转，这意味着它以稳定的速率转动。

2.In physics, we often calculate the angular speed of planets to understand their rotation around the sun.

在物理学中，我们经常计算行星的角速度以了解它们围绕太阳的旋转。

3.The angular speed of the spinning top decreases as it loses energy due to friction.

陀螺的角速度随着因摩擦而失去能量而减小。

4.The angular speed of the Earth’s rotation is approximately 15 degrees per hour.

地球自转的角速度大约是每小时15度。

5.To find the angular speed of a rotating object, you can divide the angle it covers by the time taken.

要找出旋转物体的角速度，可以将其覆盖的角度除以所用时间。

作文

In physics, the concept of angular speed refers to the rate at which an object rotates around a specific axis. It is a crucial parameter in understanding rotational motion and plays a vital role in various fields, including engineering, astronomy, and even sports. To comprehend angular speed, we must first recognize that it is measured in radians per second (rad/s) or degrees per second (°/s). This measurement indicates how much angle an object covers in a given time period, essentially quantifying the speed of rotation. For instance, consider a spinning wheel. The angular speed of the wheel can be determined by observing how many rotations it completes in a minute. If the wheel makes one full rotation every second, its angular speed would be 2π radians per second, since a complete rotation corresponds to an angle of 2π radians. This simple example illustrates the fundamental nature of angular speed in everyday life. The importance of angular speed extends beyond simple mechanics. In the realm of engineering, for example, understanding angular speed is essential when designing gears and rotating machinery. Engineers must calculate the angular speed to ensure that machines operate efficiently and safely. If the angular speed is too high, it may lead to mechanical failure or accidents. Conversely, if it is too low, the machine may not perform its intended function effectively. Thus, precise calculations of angular speed are critical in the design and operation of various mechanical systems. In astronomy, angular speed also plays a significant role in understanding celestial bodies. For instance, the Earth rotates on its axis with an angular speed that results in the cycle of day and night. This rotation takes approximately 24 hours to complete one full turn, giving the Earth an angular speed of about 15 degrees per hour. Understanding this angular speed is crucial for astronomers when calculating the positions of stars and planets in the sky. It helps them predict celestial events and understand the dynamics of our solar system. Moreover, in the world of sports, athletes often utilize the principles of angular speed to enhance their performance. For example, a figure skater who pulls in their arms during a spin increases their angular speed due to the conservation of angular momentum. By reducing their moment of inertia, they can spin faster, showcasing the practical application of this physical concept in achieving athletic excellence. In conclusion, angular speed is a fundamental concept that permeates various aspects of science and daily life. Whether it is in the context of engineering, astronomy, or sports, understanding angular speed allows us to grasp the intricacies of rotational motion and its impact on our world. As we continue to explore the universe and innovate in technology, the significance of angular speed will undoubtedly remain a key focus in both theoretical and practical applications.

角速度在物理学中指的是一个物体围绕特定轴旋转的速率。这是理解旋转运动的重要参数，并在工程、天文学甚至体育等多个领域发挥着至关重要的作用。要理解角速度，我们首先必须认识到它的单位是弧度每秒（rad/s）或度每秒（°/s）。这个测量值表示一个物体在给定时间内覆盖了多少角度，基本上量化了旋转的速度。例如，考虑一个旋转的轮子。轮子的角速度可以通过观察它在一分钟内完成多少次旋转来确定。如果轮子每秒完成一次完整的旋转，则其角速度为2π弧度每秒，因为一次完整的旋转对应于2π弧度的角度。这个简单的例子说明了角速度在日常生活中的基本性质。角速度的重要性超越了简单的力学。在工程领域，例如，理解角速度在设计齿轮和旋转机械时至关重要。工程师必须计算角速度以确保机器高效安全地运行。如果角速度过高，可能导致机械故障或事故。相反，如果太低，机器可能无法有效地执行其预期功能。因此，精确计算角速度在各种机械系统的设计和操作中至关重要。在天文学中，角速度也在理解天体方面发挥着重要作用。例如，地球围绕其轴旋转，其角速度导致昼夜循环。这一旋转大约需要24小时完成一次完整的转动，使地球的角速度约为每小时15度。理解这一角速度对于天文学家计算天空中恒星和行星的位置至关重要。它帮助他们预测天文事件并理解我们太阳系的动态。此外，在体育世界中，运动员通常利用角速度的原理来提升他们的表现。例如，花样滑冰运动员在旋转时收紧手臂会由于角动量守恒而增加他们的角速度。通过减少他们的转动惯量，他们可以旋转得更快，展示了这一物理概念在实现运动卓越方面的实际应用。总之，角速度是一个基本概念，渗透到科学和日常生活的各个方面。无论是在工程、天文学还是体育的背景下，理解角速度使我们能够掌握旋转运动的复杂性及其对我们世界的影响。随着我们继续探索宇宙和技术创新，角速度的重要性无疑将在理论和实践应用中保持关键焦点。