static equilibrium

简明释义

静态平衡

英英释义

例句

1.When a bridge supports the weight of vehicles without moving, it is said to be in static equilibrium 静态平衡.

当一座桥支撑车辆的重量而不移动时，它被称为处于静态平衡 static equilibrium。

2.A seesaw with equal weights on both sides is an example of static equilibrium 静态平衡.

一个两边重量相等的跷跷板是静态平衡 static equilibrium的一个例子。

3.In physics, an object in static equilibrium 静态平衡 has no net force acting on it.

在物理学中，处于静态平衡 static equilibrium的物体没有净力作用于它。

4.The design of skyscrapers ensures they remain in static equilibrium 静态平衡 even during strong winds.

摩天大楼的设计确保它们即使在强风中也保持在静态平衡 static equilibrium状态。

5.A book resting on a table is in static equilibrium 静态平衡 because the forces acting on it are balanced.

一本放在桌子上的书处于静态平衡 static equilibrium，因为作用在它上的力是平衡的。

作文

In the realm of physics, the concept of static equilibrium is fundamental to understanding how forces interact with objects at rest. Static equilibrium refers to the condition where an object is not in motion and remains at rest because the net force acting on it is zero. This principle is essential in various fields, including engineering, architecture, and even everyday life. To better grasp this concept, let’s explore its characteristics, applications, and significance.First and foremost, for an object to be in static equilibrium, two main conditions must be satisfied: the sum of all horizontal forces acting on the object must equal zero, and the sum of all vertical forces must also equal zero. Mathematically, this can be expressed as: ΣF_x = 0 (sum of horizontal forces) ΣF_y = 0 (sum of vertical forces) Additionally, the object must not be undergoing any angular acceleration, meaning that the sum of the torques acting on the object must also be zero. This requirement ensures that the object does not rotate about any axis, maintaining its position in space. These conditions highlight the balance of forces and moments that allow an object to remain stationary.One practical example of static equilibrium can be observed in a book resting on a table. The gravitational force pulling the book downward is balanced by the normal force exerted by the table pushing upward. Since these two forces are equal in magnitude and opposite in direction, the book remains at rest, demonstrating the principles of static equilibrium.In the field of engineering, understanding static equilibrium is crucial when designing structures such as bridges, buildings, and towers. Engineers must ensure that the forces acting on these structures are balanced to prevent collapse or failure. For instance, when analyzing a bridge, engineers calculate the loads it will bear, including the weight of vehicles, pedestrians, and environmental factors like wind or snow. By applying the principles of static equilibrium, they can determine whether the materials used can withstand these forces without moving or deforming.Moreover, static equilibrium is not limited to inanimate objects. It is also applicable in biology, particularly in understanding how organisms maintain their posture and balance. For example, when a person stands still, their body is in a state of static equilibrium, with various muscles working to counteract the forces of gravity and maintain an upright position. This dynamic balance showcases the importance of static equilibrium beyond the realm of physics and engineering.In conclusion, the concept of static equilibrium is vital in understanding the behavior of objects at rest. It encompasses the balance of forces and moments that prevent motion, ensuring stability in various applications from architecture to biology. By recognizing the conditions required for static equilibrium and its implications in real-world scenarios, we gain a deeper appreciation for the intricate balance that governs our physical world. Whether we are studying the mechanics of a bridge or the posture of a standing individual, static equilibrium plays a pivotal role in maintaining order and stability in our environment.

在物理学领域，静态平衡的概念对于理解力如何与静止物体相互作用至关重要。静态平衡指的是一种状态，在这种状态下，物体不在运动中并保持静止，因为作用于它的净力为零。这个原则在工程、建筑乃至日常生活中都至关重要。为了更好地掌握这个概念，让我们探讨一下它的特征、应用和重要性。首先，物体要处于静态平衡状态，必须满足两个主要条件：作用于物体的所有水平力的总和必须等于零，并且所有垂直力的总和也必须等于零。从数学上讲，这可以表示为：ΣF_x = 0（水平力的总和）ΣF_y = 0（垂直力的总和）此外，物体不能经历任何角加速度，这意味着作用于物体的力矩总和也必须为零。这个要求确保了物体不会围绕任何轴旋转，从而保持其在空间中的位置。这些条件突显了力量和平衡力矩的平衡，使物体保持静止。静态平衡的一个实际例子可以在书本放在桌子上时观察到。向下拉书本的重力与桌子向上施加的法向力相平衡。由于这两种力在大小上相等且方向相反，书本保持静止，展示了静态平衡的原理。在工程领域，理解静态平衡对设计桥梁、建筑物和塔楼等结构至关重要。工程师必须确保这些结构所承受的力量是平衡的，以防止坍塌或失败。例如，在分析桥梁时，工程师计算它将承受的载荷，包括车辆、行人以及风或雪等环境因素。通过应用静态平衡的原理，他们可以确定所使用的材料是否能够承受这些力量，而不会发生移动或变形。此外，静态平衡不仅限于无生命物体。它在生物学中同样适用，特别是在理解生物如何维持姿势和平衡方面。例如，当一个人静止站立时，他们的身体处于静态平衡状态，各种肌肉共同作用以抵消重力的作用，保持直立。这种动态平衡展示了静态平衡在物理和工程领域之外的重要性。总之，静态平衡的概念对于理解静止物体的行为至关重要。它涉及到防止运动的力量和力矩的平衡，确保在建筑、工程等各种应用中的稳定性。通过认识到静态平衡所需的条件及其在现实场景中的意义，我们对支配我们物理世界的微妙平衡有了更深的理解。无论我们是在研究桥梁的力学还是站立个体的姿势，静态平衡在维护我们环境中的秩序和稳定中发挥着关键作用。