resultant force

简明释义

合力

英英释义

例句

1.To find the resultant force 合力, you can use vector addition to combine the individual forces acting on an object.

要找到resultant force 合力，可以使用向量加法将作用于物体的各个力相结合。

2.When two forces act on an object in opposite directions, the overall effect is determined by the resultant force 合力.

当两个力在相反方向上作用于一个物体时，整体效果由resultant force 合力决定。

3.In a tug-of-war, the team that can generate a greater resultant force 合力 will win.

在拔河比赛中，能够产生更大resultant force 合力的队伍将获胜。

4.If multiple forces are applied at different angles, calculating the resultant force 合力 becomes more complex.

如果施加多个不同角度的力，计算resultant force 合力会变得更加复杂。

5.The resultant force 合力 acting on the car determines its acceleration according to Newton's second law.

作用于汽车的resultant force 合力根据牛顿第二定律决定其加速度。

作文

In physics, the concept of force is fundamental to understanding how objects interact with one another. Among various forces, the resultant force (合力) plays a crucial role in determining the motion of an object. The resultant force is defined as the single force that represents the vector sum of all the individual forces acting on an object. Understanding this concept is essential for analyzing motion and predicting the behavior of objects under various conditions.To illustrate the importance of the resultant force, consider a scenario where multiple forces are acting on a single object. For example, imagine a box being pushed on a flat surface. If two people push the box from opposite sides with equal force, their efforts cancel each other out, resulting in a net force of zero. In this case, the resultant force is zero, and the box remains stationary. However, if one person pushes harder than the other, the box will begin to move in the direction of the stronger push. The resultant force can be calculated by subtracting the smaller force from the larger one, leading to a net force that causes the box to accelerate.Another important aspect of the resultant force is its direction. Forces are vector quantities, meaning they have both magnitude and direction. When calculating the resultant force, it is essential to consider not only the strength of each force but also the direction in which they act. For instance, if one force acts to the right and another acts to the left, the resultant force will depend on the relative magnitudes of these forces. If the force to the right is greater, the resultant force will also be directed to the right, resulting in acceleration in that direction.The resultant force is not only crucial in theoretical physics but also has practical applications in engineering and everyday life. For engineers, understanding how to calculate the resultant force is vital when designing structures or vehicles. For example, when engineers design a bridge, they must consider various forces, such as the weight of the materials, wind resistance, and the weight of vehicles crossing the bridge. By calculating the resultant force, they can ensure that the bridge can withstand these forces without collapsing.In everyday situations, we encounter the concept of resultant force frequently. When we push a shopping cart, we apply a force that moves the cart forward. If the cart encounters resistance, such as friction from the ground, the resultant force will determine whether the cart moves, stops, or accelerates. Understanding how the resultant force works allows us to predict the outcome of our actions, making it easier to navigate through physical tasks.In conclusion, the resultant force (合力) is a fundamental concept in physics that helps us understand how forces combine to affect the motion of objects. By mastering the calculation and implications of the resultant force, we can better analyze physical interactions in both theoretical and practical contexts. Whether in the realm of science, engineering, or daily life, the resultant force is a key factor that influences the dynamics of motion and stability.