unsteady force

简明释义

非稳定力

英英释义

例句

1.In physics, an unsteady force can cause unpredictable motion in objects.

在物理学中，不稳定的力量可能导致物体的不规则运动。

2.The roller coaster's sudden drops create an unsteady force that thrills riders.

过山车的突然下降产生了不稳定的力量，让乘客感到刺激。

3.The bridge swayed under the influence of an unsteady force, causing concerns about its structural integrity.

桥在不稳定的力量的影响下摇晃，引发了人们对其结构完整性的担忧。

4.During the earthquake, buildings experienced an unsteady force that led to significant damage.

在地震期间，建筑物经历了不稳定的力量，导致了严重的损坏。

5.The pilot had to adjust for the unsteady force of the wind while landing the aircraft.

飞行员在着陆时必须调整以应对风的不稳定的力量。

作文

In the study of physics, we often encounter various types of forces that act upon objects. One such concept is the unsteady force, which refers to a force that changes in magnitude or direction over time. Understanding this type of force is crucial in fields such as engineering, aerodynamics, and even biomechanics. To grasp the implications of an unsteady force, we must first differentiate it from steady forces. A steady force remains constant, providing a predictable influence on an object. For instance, the gravitational force acting on an object at rest is a steady force; it pulls the object downwards with a consistent magnitude. In contrast, an unsteady force can vary due to factors like acceleration, external influences, or changing conditions.Consider the example of a car accelerating down a road. Initially, when the driver presses the gas pedal, the car experiences an increase in speed, which generates an unsteady force acting on it. This force is not constant; it fluctuates based on the driver's input and the car's response to the road conditions. As the car speeds up, the force exerted by the engine changes, creating a dynamic situation that must be analyzed carefully.Another illustration of an unsteady force can be found in the realm of fluid dynamics. When a boat moves through water, it encounters resistance from the water itself. This resistance can be categorized as an unsteady force because it varies with the speed of the boat, the shape of its hull, and the characteristics of the water. As the boat accelerates or decelerates, the forces acting upon it change, leading to complex interactions that must be accounted for in design and navigation.In engineering applications, understanding unsteady forces is vital for ensuring the safety and efficiency of structures. For example, bridges are designed to withstand not only steady loads, such as the weight of vehicles but also unsteady forces caused by wind gusts or seismic activity. Engineers use sophisticated models to predict how these forces will affect the structure over time, allowing them to create resilient designs.Moreover, in biomechanics, the concept of unsteady forces plays a significant role in understanding human movement. When a person runs or jumps, their body experiences a variety of forces that change rapidly. The muscles exert different levels of force depending on the action being performed, resulting in an unsteady force acting on the body. This variability is crucial for athletes who need to adapt their movements to optimize performance and reduce the risk of injury.In conclusion, the notion of unsteady force is essential for comprehending the complexities of motion and interaction in both natural and engineered systems. By studying how these forces behave and influence objects, scientists and engineers can develop better technologies and improve our understanding of the physical world. Whether in the context of a speeding car, a moving boat, or the dynamics of human movement, recognizing the significance of unsteady forces allows us to navigate the challenges presented by variable conditions effectively. As we continue to explore this fascinating area of study, the implications of unsteady forces will undoubtedly lead to advancements across various disciplines, enhancing our ability to innovate and adapt to the ever-changing environment around us.

在物理学研究中，我们经常遇到作用于物体的各种力。其中一个概念是不稳定力，指的是随时间变化大小或方向的力。理解这种类型的力量对于工程、空气动力学甚至生物力学等领域至关重要。要掌握不稳定力的含义，我们首先必须将其与稳态力区分开来。稳态力保持不变，为物体提供可预测的影响。例如，作用于静止物体的重力是一种稳态力；它以一致的大小向下拉动物体。相比之下，不稳定力可能由于加速度、外部影响或变化的条件而变化。考虑汽车沿路加速的例子。最初，当司机踩下油门时，汽车的速度增加，从而产生了作用于它的不稳定力。这种力不是恒定的；它根据司机的输入和汽车对路况的反应而波动。随着汽车加速，发动机施加的力发生变化，创造出一种动态情况，必须仔细分析。另一个不稳定力的例子可以在流体动力学领域找到。当一艘船在水中移动时，它会遇到来自水本身的阻力。这种阻力可以被归类为不稳定力，因为它随着船的速度、船体的形状和水的特性而变化。当船加速或减速时，作用于它的力会发生变化，导致复杂的相互作用，必须在设计和导航中予以考虑。在工程应用中，理解不稳定力对于确保结构的安全性和效率至关重要。例如，桥梁的设计不仅要承受稳态荷载（如车辆的重量），还要承受由风力或地震活动引起的不稳定力。工程师使用复杂的模型来预测这些力量如何随着时间的推移影响结构，从而使他们能够创建出具有韧性的设计。此外，在生物力学中，不稳定力的概念在理解人体运动方面发挥着重要作用。当一个人跑步或跳跃时，他们的身体经历多种迅速变化的力量。肌肉根据所执行的动作施加不同水平的力量，从而导致作用于身体的不稳定力。这种变化对于需要调整运动以优化表现和减少受伤风险的运动员至关重要。总之，不稳定力的概念对于理解自然和工程系统中运动和相互作用的复杂性至关重要。通过研究这些力量的行为及其对物体的影响，科学家和工程师可以开发更好的技术，并提高我们对物理世界的理解。无论是在快速行驶的汽车、移动的船只还是人体运动的动态中，认识到不稳定力的重要性使我们能够有效应对可变条件带来的挑战。随着我们继续探索这一迷人的研究领域，不稳定力的影响无疑将推动各个学科的发展，增强我们创新和适应周围不断变化环境的能力。