lever arm

简明释义

杆臂

英英释义

例句

1.During the experiment, we measured the effect of changing the lever arm (杠杆臂) length on the output force.

在实验中，我们测量了改变lever arm (杠杆臂) 长度对输出力的影响。

2.In physics, the lever arm (杠杆臂) is crucial for calculating torque in rotational systems.

在物理学中，lever arm (杠杆臂) 对于计算旋转系统中的扭矩至关重要。

3.When using a crowbar, the length of the lever arm (杠杆臂) determines how much force you can exert.

使用撬棍时，lever arm (杠杆臂) 的长度决定了你能施加的力量。

4.The mechanic adjusted the lever arm (杠杆臂) on the hydraulic jack to lift the car more efficiently.

机械师调整了液压千斤顶上的lever arm (杠杆臂)，以更有效地抬起汽车。

5.A longer lever arm (杠杆臂) allows for greater mechanical advantage when lifting heavy objects.

较长的lever arm (杠杆臂) 在举起重物时提供更大的机械优势。

作文

In physics, the concept of a lever arm is crucial for understanding how levers work and the principles of torque. A lever arm refers to the distance from the pivot point, or fulcrum, to the point where force is applied. This distance plays a significant role in determining the effectiveness of a lever in lifting or moving an object. The longer the lever arm, the less force is required to lift a heavier load. This principle is evident in everyday tools such as seesaws, crowbars, and even scissors.Consider the example of a seesaw. When two children sit at opposite ends, they create a balance around the fulcrum. If one child is much heavier than the other, they can still achieve balance by moving farther away from the fulcrum, effectively increasing their lever arm. This adjustment allows them to counterbalance the weight of their friend. In this scenario, the lever arm demonstrates how distance from the pivot affects the ability to lift weight.The importance of the lever arm extends beyond simple playground equipment; it is a fundamental principle in engineering and mechanics. Engineers utilize the concept of lever arm when designing structures and machines. For instance, when constructing bridges, engineers must consider the forces acting on various components and how the lever arm can be used to distribute weight evenly. By optimizing the lever arm, they can ensure that the structure remains stable and safe under load.Moreover, the lever arm is also relevant in sports and physical activities. Athletes often use techniques that maximize their lever arm to enhance performance. For example, in gymnastics, a gymnast may extend their arms during a routine to increase their lever arm, allowing them to perform complex maneuvers with greater ease. Similarly, in weightlifting, athletes are trained to position their bodies in a way that optimizes their lever arm, enabling them to lift heavier weights with less effort.In addition to its practical applications, the lever arm serves as a metaphor for leverage in various fields. In business, for instance, having a strong lever arm can mean the difference between success and failure. Companies that understand how to leverage their resources effectively can achieve better outcomes. This concept mirrors the physical principles of the lever arm: the right positioning and distance can yield powerful results.In conclusion, the lever arm is a fundamental concept that illustrates the relationship between force, distance, and the ability to lift or move objects. Whether in physics, engineering, sports, or business, understanding how to manipulate the lever arm can lead to improved efficiency and effectiveness. As we continue to explore the principles of leverage in various aspects of life, the lever arm remains a key factor in achieving our goals and overcoming challenges.

在物理学中，杠杆臂的概念对于理解杠杆的工作原理和扭矩的原则至关重要。杠杆臂是指从支点或支撑点到施加力的点之间的距离。这一距离在决定杠杆在提升或移动物体时的有效性方面发挥着重要作用。杠杆臂越长，提升较重负载所需的力量就越小。这一原理在日常工具中显而易见，例如跷跷板、撬棍甚至剪刀。考虑一个跷跷板的例子。当两个孩子坐在对面的两端时，他们在支点周围形成平衡。如果一个孩子比另一个孩子重得多，他们仍然可以通过向支点远处移动来实现平衡，从而有效地增加他们的杠杆臂。这种调整使他们能够抵消朋友的重量。在这个场景中，杠杆臂展示了离支点的距离如何影响提升重量的能力。杠杆臂的重要性不仅限于简单的游乐设施；它是工程和机械学中的基本原理。工程师在设计结构和机器时会利用杠杆臂的概念。例如，在建造桥梁时，工程师必须考虑施加在各个组件上的力量，以及如何使用杠杆臂来均匀分配重量。通过优化杠杆臂，他们可以确保结构在负载下保持稳定和安全。此外，杠杆臂也与体育和身体活动相关。运动员经常使用最大化他们的杠杆臂的技术来提高表现。例如，在体操中，运动员可能在例行演出中伸展手臂，以增加他们的杠杆臂，使他们能够更轻松地执行复杂的动作。同样，在举重中，运动员接受训练以使他们的身体处于能够优化杠杆臂的位置，从而使他们能够用更少的努力举起更重的重量。除了其实用应用之外，杠杆臂还作为各种领域中杠杆的隐喻。在商业中，拥有强大的杠杆臂可能意味着成功与失败之间的差异。了解如何有效利用资源的公司可以实现更好的结果。这个概念与杠杆臂的物理原理相呼应：正确的位置和距离可以产生强大的结果。总之，杠杆臂是一个基本概念，说明了力量、距离与提升或移动物体能力之间的关系。无论是在物理学、工程、体育还是商业中，理解如何操纵杠杆臂都可以带来更高的效率和有效性。随着我们继续探索生活各个方面的杠杆原理，杠杆臂依然是实现目标和克服挑战的关键因素。