normal force

简明释义

法向力

英英释义

例句

1.On an inclined plane, the normal force 法向力 is less than the weight of the object due to the angle of inclination.

在斜面上，法向力 法向力小于物体的重量，这是由于倾斜角度造成的。

2.In a car going around a curve, the road provides a normal force 法向力 that helps keep the car from sliding outward.

在一辆车转弯时，路面提供的法向力 法向力帮助车辆防止滑出轨道。

3.When a book rests on a table, the table exerts a normal force 法向力 equal to the weight of the book.

当一本书放在桌子上时，桌子施加的法向力 法向力等于书的重量。

4.When you push down on a spring, it compresses until the normal force 法向力 from the spring equals your pushing force.

当你向下推一个弹簧时，它会压缩，直到弹簧的法向力 法向力等于你的推力。

5.The normal force 法向力 acting on a person standing on the ground balances their weight.

站在地面上的人的法向力 法向力与他们的体重相平衡。

作文

The concept of normal force is fundamental in physics, particularly in mechanics. It refers to the force exerted by a surface perpendicular to an object resting on it. Understanding this force is essential for analyzing various physical scenarios, such as when an object is placed on a flat surface or inclined plane. Consider a simple example: a book lying flat on a table. The weight of the book pulls it downward due to gravity, creating a force known as gravitational force. In response, the table exerts an upward force on the book, which we call normal force. This force acts perpendicular to the surface of the table and balances the weight of the book, thereby preventing it from falling through the table. Without this normal force, the book would accelerate downwards indefinitely, illustrating how crucial this force is in maintaining equilibrium.In more complex scenarios, such as an object on an incline, the normal force plays a vital role in determining the object's motion. When an object rests on a slope, the gravitational force can be divided into two components: one acting perpendicular to the incline and the other parallel to it. The normal force counteracts the perpendicular component of the gravitational force, allowing us to calculate the net force acting on the object along the slope. This understanding helps us predict whether the object will slide down or remain stationary.Moreover, the normal force is not always equal to the weight of the object, especially in cases involving additional forces. For instance, if a person pushes down on the book while it is on the table, the normal force increases to counteract both the weight of the book and the additional force applied. This relationship highlights that the normal force can vary depending on the situation, making it a dynamic aspect of physics.Another interesting application of normal force is found in amusement park rides, such as roller coasters. As riders experience rapid changes in speed and direction, the normal force they feel can vary significantly. At the top of a hill, the normal force may be less than their weight, leading to a feeling of weightlessness. Conversely, at the bottom of a drop, the normal force can exceed their weight, creating a thrilling sensation of being pressed into the seat. These examples demonstrate how the normal force contributes to our everyday experiences and the design of exciting attractions.In summary, the normal force is a critical concept in understanding the interactions between objects and surfaces. Whether it is balancing a book on a table or experiencing the thrill of a roller coaster, the normal force is always at play. By grasping this concept, we gain deeper insights into the principles of physics that govern our world, allowing us to analyze and predict the behavior of objects in various contexts. Therefore, recognizing the importance of normal force is essential for anyone studying physics or simply seeking to understand the mechanics of everyday life.

“法向力”是物理学中一个基本概念，特别是在力学中。它指的是表面垂直于静止在其上的物体所施加的力。理解这一力对于分析各种物理场景至关重要，例如当一个物体放置在平坦表面或倾斜面上时。考虑一个简单的例子：一本书平放在桌子上。书的重量因重力向下拉，形成一种称为重力的力。作为回应，桌子对书施加向上的力，我们称之为“法向力”。这个力垂直于桌面的表面，平衡了书的重量，从而防止它掉落到桌子下面。如果没有这种“法向力”，书将无限制地向下加速，这说明这种力在维持平衡中是多么重要。在更复杂的场景中，例如一个物体在倾斜面上，“法向力”在决定物体运动方面起着至关重要的作用。当一个物体静止在坡道上时，重力可以分为两个分量：一个垂直于坡道，另一个平行于坡道。“法向力”抵消重力的垂直分量，使我们能够计算作用在物体沿坡道方向的净力。这种理解帮助我们预测物体是会滑下去还是保持静止。此外，“法向力”并不总是等于物体的重量，尤其是在涉及额外力的情况下。例如，如果一个人向下推书，而书在桌子上，法向力就会增加，以抵消书的重量和施加的附加力。这种关系突显出“法向力”可以根据情况变化，使其成为物理学的一个动态方面。“法向力”的另一个有趣应用是在游乐园的游乐设施中，例如过山车。当乘客经历快速的速度和方向变化时，他们感受到的“法向力”可能会显著变化。在山顶，法向力可能小于他们的重量，导致失重的感觉。相反，在下降的底部，法向力可能超过他们的重量，产生一种被压入座椅的刺激感。这些例子展示了“法向力”如何影响我们的日常体验以及刺激性游乐设施的设计。总之，“法向力”是理解物体与表面之间相互作用的重要概念。无论是平衡桌子上的书，还是体验过山车的刺激，“法向力”始终在发挥作用。通过掌握这一概念，我们可以深入了解支配我们世界的物理原理，从而分析和预测各种背景下物体的行为。因此，认识到“法向力”的重要性对于任何学习物理或仅仅想理解日常生活机制的人来说都是必不可少的。