resultant force

简明释义

合力

英英释义

例句

1.In a game of tug-of-war, the team that generates the greatest resultant force 合力 will win.

在拔河比赛中，产生最大 resultant force 合力 的团队将获胜。

2.If you push a box with a force of 10 N to the right and another with 5 N to the left, the resultant force 合力 is 5 N to the right.

如果你用10 N的力向右推一个箱子，而用5 N的力向左推另一个箱子，则 resultant force 合力 为5 N向右。

3.The resultant force 合力 on an object at rest is zero.

静止物体上的 resultant force 合力 为零。

4.When two forces are applied in opposite directions, the net force is the resultant force 合力 acting on the object.

当两个力在相反方向上施加时，作用在物体上的净力是 resultant force 合力。

5.The resultant force 合力 determines the acceleration of an object according to Newton's second law.

根据牛顿第二定律，resultant force 合力 决定了物体的加速度。

作文

Understanding the concept of force is fundamental in physics, especially when analyzing the motion of objects. One of the key ideas in this field is the notion of resultant force, which plays a crucial role in determining how an object will move. The resultant force is defined as the single force that represents the vector sum of all the individual forces acting on an object. To grasp this concept better, let’s explore it through some examples and applications.When multiple forces are applied to an object, they can either reinforce or counteract each other. For instance, imagine pushing a shopping cart. If you push it with a force of 10 Newtons to the right and your friend pushes it with a force of 5 Newtons to the left, the resultant force can be calculated by subtracting the opposing forces. In this case, the resultant force would be 5 Newtons to the right, meaning the cart will accelerate in that direction.Another example can be seen in the context of gravity. When an object is dropped, the force of gravity acts on it, pulling it downward. If we consider air resistance acting upward against the falling object, we can again apply the idea of resultant force. The gravitational force might be stronger than the air resistance, resulting in a positive resultant force that causes the object to fall. Conversely, if the air resistance is greater, the resultant force would be negative, potentially leading to a situation where the object might not fall at all or even rise.The importance of understanding the resultant force extends beyond simple examples. In engineering and design, knowing how to calculate the resultant force helps engineers create safer and more efficient structures and vehicles. For instance, when designing a bridge, engineers must account for various forces, including wind, weight, and tension. By calculating the resultant force, they can ensure that the bridge will withstand these forces without collapsing.In sports, athletes also benefit from understanding the resultant force. A football player kicking a ball applies a force that can be influenced by other factors like the angle of the kick and the player's momentum. Coaches often analyze these forces to improve performance and strategy. By optimizing the resultant force, players can achieve better results on the field.In conclusion, the concept of resultant force is vital for understanding how forces interact and affect motion. Whether in everyday scenarios, engineering applications, or sports, recognizing the significance of the resultant force allows us to predict and manipulate the behavior of objects effectively. As we continue to study physics, mastering the idea of resultant force will undoubtedly enhance our comprehension of the physical world around us.

理解力的概念在物理学中是基础，尤其是在分析物体运动时。这个领域中的一个关键概念是合力的概念，它在决定物体如何运动方面发挥着至关重要的作用。合力被定义为代表作用在物体上的所有个别力的矢量和的单一力量。为了更好地掌握这个概念，让我们通过一些例子和应用来探讨它。当多个力施加在一个物体上时，它们可以相互增强或相互抵消。例如，想象一下推购物车。如果你以10牛顿的力向右推，而你的朋友以5牛顿的力向左推，那么可以通过减去相反的力来计算合力。在这种情况下，合力将是5牛顿向右，这意味着购物车将朝那个方向加速。另一个例子可以在重力的背景下看到。当一个物体被丢下时，重力作用于它，将其向下拉。如果我们考虑空气阻力向上作用于下落的物体，我们可以再次应用合力的概念。重力可能比空气阻力强，从而导致正的合力，使物体下落。相反，如果空气阻力更大，则合力将为负，可能导致物体根本不下落甚至上升。理解合力的重要性不仅限于简单的例子。在工程和设计中，知道如何计算合力帮助工程师创建更安全、更高效的结构和车辆。例如，在设计桥梁时，工程师必须考虑各种力量，包括风、重量和张力。通过计算合力，他们可以确保桥梁能够承受这些力量而不会倒塌。在体育运动中，运动员也从理解合力中受益。踢足球的运动员施加的力量可能会受到踢球角度和运动员动量等其他因素的影响。教练通常会分析这些力量，以改善表现和策略。通过优化合力，运动员可以在场上取得更好的成绩。总之，合力的概念对于理解力如何相互作用和影响运动至关重要。无论是在日常场景、工程应用还是体育运动中，认识到合力的重要性使我们能够有效地预测和操控物体的行为。随着我们继续学习物理，掌握合力的概念无疑将增强我们对周围物理世界的理解。