normal force

简明释义

法向力

英英释义

例句

1.The normal force 法向力 is what prevents objects from sinking into surfaces.

法向力 法向力是防止物体沉入表面的力量。

2.On a slope, the normal force 法向力 acts perpendicular to the surface of the incline.

在斜坡上，法向力 法向力垂直于斜面的表面。

3.The normal force 法向力 can change when additional weight is added to an object.

当在物体上增加额外重量时，法向力 法向力会发生变化。

4.When a book is resting 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。

5.In an elevator moving upwards, the normal force 法向力 acting on a person increases.

在向上移动的电梯中，作用于一个人的法向力 法向力增加。

作文

The concept of normal force is fundamental in physics, particularly in the study of mechanics. It refers to the support force exerted upon an object that is in contact with another stable object. This force acts perpendicular to the surface of contact. For instance, when a book is resting on a table, the table exerts a normal force against the weight of the book, preventing it from falling through. Without this force, objects would simply fall under the influence of gravity. To better understand normal force, consider a scenario where an individual is standing on a flat surface. The weight of the person, which is the force due to gravity acting downwards, is countered by the normal force exerted by the ground. This interaction is crucial for maintaining equilibrium. If the normal force is equal to the weight of the person, they remain stationary. However, if the person leans against a wall, the wall also provides a normal force that supports them, demonstrating how multiple surfaces can exert this force simultaneously.In addition to static situations, normal force plays a significant role in dynamics, especially when dealing with inclined planes. When an object is placed on an incline, the normal force is not equal to the object's weight but rather a component of it. This is because the force of gravity can be resolved into two components: one parallel to the incline and one perpendicular to it. The normal force will balance the perpendicular component, allowing for the calculation of frictional forces that may act on the object as it slides down the slope.Moreover, understanding normal force is essential in various applications, such as engineering and construction. For example, when designing structures, engineers must calculate the normal force acting on beams and columns to ensure that they can support the loads applied to them without collapsing. This involves considering factors like material strength and safety margins, which are all rooted in the principles of normal force.In summary, the normal force is a critical concept in physics that describes the support force acting on an object in contact with a surface. It is essential for understanding how objects interact with their environments, whether at rest or in motion. By grasping the implications of normal force, one can gain deeper insights into the mechanics of everyday life, from the simple act of placing a cup on a table to more complex scenarios involving machinery and infrastructure. The study of normal force not only enhances our comprehension of physical laws but also empowers us to apply these principles in practical and innovative ways.

法力的概念在物理学中是基础性的，尤其是在力学研究中。它指的是施加在与另一个稳定物体接触的物体上的支持力。这种力量垂直于接触表面。例如，当一本书放在桌子上时，桌子对书的重量施加法力，防止它掉落。如果没有这种力量，物体将仅在重力的影响下自由下落。为了更好地理解法力，考虑一个人站在平坦表面的场景。这个人的重量，即向下作用的重力，在地面施加的法力的反作用下被抵消。这种相互作用对于保持平衡至关重要。如果法力等于这个人的体重，他们将保持静止。然而，如果这个人靠在墙上，墙也会提供法力来支撑他们，这表明多个表面可以同时施加这种力量。除了静态情况外，法力在动态中也起着重要作用，尤其是在处理倾斜面时。当一个物体放置在斜面上时，法力并不等于物体的重量，而是其重量的一个分量。这是因为重力可以分解为两个分量：一个平行于斜面，一个垂直于斜面。法力将平衡垂直分量，从而允许计算可能作用于物体的摩擦力，因为它沿斜面滑下。此外，理解法力在工程和建筑等各种应用中至关重要。例如，在设计结构时，工程师必须计算施加在梁和柱上的法力，以确保它们能够支持施加在其上的负载而不会倒塌。这涉及考虑材料强度和安全余量等因素，这些因素都根植于法力的原则之中。总之，法力是物理学中的一个关键概念，描述了施加在与表面接触的物体上的支持力。它对于理解物体如何与环境互动至关重要，无论是静止还是运动。通过掌握法力的含义，人们可以深入了解日常生活的力学，从简单的把杯子放在桌子上的行为到涉及机械和基础设施的更复杂场景。学习法力不仅增强了我们对物理法则的理解，还使我们能够以实用和创新的方式应用这些原则。