fixed lever

简明释义

联结杠杆

英英释义

例句

1.In the playground, children can swing higher by pulling the fixed lever 固定杠杆 on the seesaw.

在游乐场，孩子们可以通过拉动 固定杠杆 fixed lever 在跷跷板上荡得更高。

2.The fixed lever 固定杠杆 on the door allows for easy opening and closing.

门上的 固定杠杆 fixed lever 使开关变得容易。

3.During the experiment, the scientists observed how the fixed lever 固定杠杆 affected the balance of weights.

在实验中，科学家观察了 固定杠杆 fixed lever 如何影响重量的平衡。

4.To lift the heavy box, the worker used a fixed lever 固定杠杆 to gain mechanical advantage.

为了抬起重箱，工人使用了一个 固定杠杆 fixed lever 来获得机械优势。

5.The mechanic adjusted the machine's settings using the fixed lever 固定杠杆 to ensure optimal performance.

机械师使用 固定杠杆 fixed lever 调整机器的设置，以确保最佳性能。

作文

In the world of physics and engineering, the concept of a lever is fundamental. A lever is a simple machine that allows us to amplify force, making it easier to lift heavy objects. Among the various types of levers, the fixed lever (固定杠杆) stands out due to its unique characteristics. Unlike movable levers, which can pivot at different points, a fixed lever has a fulcrum that remains stationary. This stationary pivot point enables the user to exert force on one end of the lever while lifting or moving an object on the opposite end. To better understand the importance of a fixed lever (固定杠杆), let us consider a classic example: a seesaw in a playground. When two children sit at either end of the seesaw, their weight creates a balance around the fulcrum in the center. If one child is heavier, they will need to move closer to the fulcrum to maintain equilibrium. This scenario illustrates how a fixed lever operates, as the fulcrum does not change position, allowing for a simple yet effective way to balance forces.In practical applications, fixed levers (固定杠杆) can be found in many tools and machines. For instance, a crowbar is a common tool that functions as a fixed lever when prying up a nail or lifting a heavy object. The user applies force at one end of the crowbar, while the other end lifts the object, demonstrating how a fixed lever can make physically demanding tasks easier.The principle behind a fixed lever (固定杠杆) is based on the law of moments, which states that the moment (or torque) around the fulcrum must be balanced for the lever to remain stationary. This means that the force applied multiplied by the distance from the fulcrum must equal the weight of the object being lifted multiplied by its distance from the fulcrum. Understanding this principle allows engineers and designers to create more efficient tools that utilize the power of fixed levers (固定杠杆).Moreover, the application of fixed levers (固定杠杆) extends beyond simple machines. In biomechanics, our bodies use levers to perform movements. For example, when we lift our arms, the elbow acts as a fulcrum, and the muscles exert force at one end while lifting the arm at the other. This natural use of fixed levers (固定杠杆) showcases the efficiency of our anatomy in performing daily tasks, from reaching for objects on a shelf to pushing a door open.In conclusion, the fixed lever (固定杠杆) is a crucial element in both physics and everyday life. Its ability to amplify force and facilitate movement makes it an invaluable tool in various applications, from playgrounds to construction sites. By understanding how a fixed lever works, we can appreciate the ingenuity behind simple machines and their significant impact on our lives. Whether we are using a crowbar or simply moving our limbs, the principles of the fixed lever (固定杠杆) are always at play, demonstrating the power of leverage in our physical world.

在物理和工程的世界里，杠杆的概念是基础性的。杠杆是一种简单的机械装置，可以让我们放大力量，从而更容易地抬起重物。在各种类型的杠杆中，fixed lever（固定杠杆）因其独特的特性而脱颖而出。与可以在不同点上旋转的可动杠杆不同，fixed lever（固定杠杆）具有一个保持静止的支点。这个静止的支点使得用户能够在杠杆的一端施加力量，同时在另一端提升或移动物体。为了更好地理解fixed lever（固定杠杆）的重要性，让我们考虑一个经典例子：游乐场的跷跷板。当两个孩子坐在跷跷板的两端时，他们的重量在中间的支点周围形成了平衡。如果一个孩子较重，他们需要靠近支点，以保持平衡。这种情况说明了fixed lever（固定杠杆）的运作，因为支点位置不变，使得平衡力的方式简单而有效。在实际应用中，fixed levers（固定杠杆）可以在许多工具和机器中找到。例如，撬棍是一种常见的工具，当撬起钉子或抬起重物时，它作为fixed lever（固定杠杆）工作。用户在撬棍的一端施加力量，而另一端则抬起物体，演示了fixed lever（固定杠杆）如何使体力劳动变得更轻松。fixed lever（固定杠杆）背后的原理基于力矩定律，即支点周围的力矩（或扭矩）必须平衡，以便杠杆保持静止。这意味着施加的力量乘以到支点的距离必须等于被抬起物体的重量乘以其到支点的距离。理解这一原理使工程师和设计师能够创造出更高效的工具，利用fixed levers（固定杠杆）的力量。此外，fixed levers（固定杠杆）的应用不仅限于简单机械。在生物力学中，我们的身体使用杠杆来执行运动。例如，当我们抬起手臂时，肘部充当支点，肌肉在一端施加力量，同时在另一端抬起手臂。这种对fixed levers（固定杠杆）的自然使用展示了我们解剖结构在执行日常任务中的效率，从伸手去拿架子上的物体到推开门。总之，fixed lever（固定杠杆）是物理学和日常生活中的关键元素。它放大力量和促进运动的能力使其在各种应用中成为一种无价的工具，从游乐场到建筑工地。通过理解fixed lever的工作原理，我们可以欣赏到简单机械背后的聪明才智及其对我们生活的重大影响。无论我们是使用撬棍还是简单地移动四肢，fixed lever（固定杠杆）的原理始终在发挥作用，展示了杠杆在我们物理世界中的力量。