angular acceleration

简明释义

角加速度

英英释义

例句

1.To calculate the angular acceleration 角加速度, you need to know the change in angular velocity and the time taken.

要计算角加速度，你需要知道角速度的变化和所需的时间。

2.The angular acceleration 角加速度 of a spinning top decreases as it loses energy over time.

陀螺旋转的角加速度随着时间的推移而减少，因为它失去了能量。

3.In a physics simulation, we can observe how angular acceleration 角加速度 affects the motion of a rotating object.

在物理模拟中，我们可以观察到角加速度如何影响旋转物体的运动。

4.The wheel of the bicycle experiences an increase in angular acceleration 角加速度 when the rider pedals harder.

当骑自行车的人用力踩踏板时，自行车的轮子经历了增加的角加速度。

5.The car's tires can experience significant angular acceleration 角加速度 during sharp turns.

在急转弯时，汽车的轮胎可能会经历显著的角加速度。

作文

In the realm of physics, understanding the concepts of motion is crucial for comprehending how objects behave under various forces. One such concept is angular acceleration, which plays a pivotal role in rotational dynamics. Angular acceleration refers to the rate of change of angular velocity over time. This means that it measures how quickly an object is speeding up or slowing down its rotation. For instance, when a spinning top gradually slows down, it experiences a negative angular acceleration, while a racing car taking a sharp turn accelerates in its rotation, experiencing positive angular acceleration.To further illustrate this concept, consider a scenario where a figure skater performs a spin. As the skater pulls their arms in closer to their body, they reduce their moment of inertia and consequently increase their rotational speed. This change in speed is a direct result of angular acceleration. The skater's ability to control their spin highlights the importance of understanding this physical principle, as it allows them to execute complex maneuvers with precision.Mathematically, angular acceleration (α) can be expressed using the formula: α = Δω / Δt, where Δω represents the change in angular velocity and Δt represents the change in time. This equation shows that angular acceleration is directly proportional to the change in velocity and inversely proportional to the time it takes for that change to occur. A greater change in velocity over a shorter period results in a higher angular acceleration.Moreover, angular acceleration is not only relevant in theoretical physics but also has practical applications in engineering and technology. For example, in the design of roller coasters, engineers must consider angular acceleration to ensure safety and comfort for riders. Sudden changes in angular acceleration can lead to discomfort or even injury, so designers carefully calculate the curves and drops of the track to provide a thrilling yet safe experience.In everyday life, we encounter angular acceleration in various forms. When riding a bicycle, turning the handlebars causes the front wheel to rotate, leading to angular acceleration. Similarly, when a car makes a turn, the wheels experience angular acceleration as they change their direction of motion. Understanding angular acceleration helps us appreciate the intricate dance of forces at play in our daily activities.In conclusion, angular acceleration is a fundamental concept in physics that describes how quickly an object's rotational speed changes. It is essential for understanding the dynamics of spinning objects, from figure skaters to roller coasters. By grasping the principles behind angular acceleration, we can better appreciate the mechanics of motion in both theoretical and practical contexts. Whether in the classroom or in real-world applications, the significance of angular acceleration cannot be overstated, as it underpins much of the physical phenomena we observe around us.

在物理学领域，理解运动的概念对于理解物体在各种力作用下的行为至关重要。其中一个概念是角加速度，它在旋转动力学中起着关键作用。角加速度指的是角速度随时间变化的速率。这意味着它测量一个物体旋转速度加快或减慢的速度。例如，当陀螺逐渐减速时，它经历了负的角加速度，而赛车在急转弯时加速旋转，经历了正的角加速度。为了进一步说明这个概念，可以考虑一个花样滑冰运动员旋转的场景。当滑冰者将手臂收紧到身体附近时，他们减少了转动惯量，因此增加了旋转速度。这种速度的变化直接是由于角加速度造成的。滑冰者控制旋转的能力突显了理解这一物理原理的重要性，因为它使他们能够精确地执行复杂的动作。在数学上，角加速度（α）可以用公式表示：α = Δω / Δt，其中Δω表示角速度的变化，Δt表示时间的变化。这个方程表明，角加速度与速度变化成正比，与发生这种变化所需的时间成反比。在较短的时间内速度变化越大，角加速度就越高。此外，角加速度不仅在理论物理中相关，而且在工程和技术中也有实际应用。例如，在过山车的设计中，工程师必须考虑角加速度以确保乘客的安全和舒适。突然的角加速度变化可能导致不适甚至受伤，因此设计师仔细计算轨道的曲线和下坡，以提供刺激但安全的体验。在日常生活中，我们以各种形式遇到角加速度。骑自行车时，转动车把会导致前轮旋转，从而产生角加速度。同样，当汽车转弯时，车轮在改变运动方向时经历角加速度。理解角加速度帮助我们欣赏日常活动中作用的复杂力量舞蹈。总之，角加速度是物理学中的一个基本概念，描述了一个物体旋转速度变化的快慢。它对于理解旋转物体的动态至关重要，从花样滑冰者到过山车。通过掌握角加速度背后的原理，我们可以更好地欣赏理论和实际背景下运动的力学。无论是在课堂上还是在现实应用中，角加速度的重要性都不容小觑，因为它支撑着我们周围观察到的许多物理现象。