centripetal force

简明释义

向心力

英英释义

例句

1.For an object to maintain circular motion, a constant centripetal force must act towards the center of the circle.

为了使物体保持圆周运动，必须有一个恒定的向心力作用于圆心。

2.The centripetal force required for a satellite to orbit the Earth is provided by gravity.

卫星绕地球轨道运行所需的向心力是由重力提供的。

3.When a car makes a turn, the tires exert a centripetal force that keeps it on the curved path.

当一辆车转弯时，轮胎施加的向心力使其保持在弯曲的道路上。

4.In a roller coaster, the tracks provide the necessary centripetal force to keep the cars on the loop.

在过山车中，轨道提供了必要的向心力以保持车辆在循环轨道上。

5.The tension in the string provides the centripetal force needed for the ball to swing in a circle.

绳子的张力提供了球在圆周中摆动所需的向心力。

作文

In the realm of physics, the concept of centripetal force plays a crucial role in understanding motion in circular paths. This force is directed towards the center of the circle around which an object is moving. It is essential for maintaining circular motion and is responsible for keeping the object from flying off in a straight line due to inertia. Without centripetal force (向心力), objects would not be able to follow curved trajectories, and instead, they would continue on a linear path as dictated by Newton's first law of motion.To illustrate this concept, consider a simple example of a car turning around a bend. As the car navigates the curve, the tires exert a force against the ground, which provides the necessary centripetal force (向心力) to keep the car on its curved path. If the road is slippery or if the speed of the car exceeds a certain limit, the required centripetal force (向心力) may not be met, leading to a loss of control and potentially causing the car to skid off the road.Another classic example can be found in the motion of planets around the sun. The gravitational pull of the sun acts as a centripetal force (向心力) that keeps the planets in their elliptical orbits. The balance between the gravitational force and the inertia of the planets is what allows them to maintain stable orbits. If the centripetal force (向心力) provided by gravity were to suddenly vanish, the planets would move in straight lines away from the sun, illustrating how vital this force is in celestial mechanics.Moreover, centripetal force (向心力) is not limited to large-scale phenomena; it can also be observed in everyday activities. For instance, when swinging a ball attached to a string in a circular motion, the tension in the string provides the centripetal force (向心力) necessary to keep the ball moving in a circle. If the string were to break, the ball would fly off tangentially, again demonstrating the significance of this force in maintaining circular motion.In conclusion, the concept of centripetal force (向心力) is fundamental in physics, particularly in the study of circular motion. It is the force that enables objects to move along curved paths, whether they are cars navigating a turn, planets orbiting a star, or simple experiments with strings and balls. Understanding centripetal force (向心力) not only deepens our comprehension of physical laws but also enhances our appreciation of the intricate dynamics of the universe. By recognizing the importance of this force, we can better understand various phenomena in both nature and technology, paving the way for advancements in fields such as engineering, astronomy, and even sports science.

在物理学领域，centripetal force（向心力）的概念在理解圆周运动中起着至关重要的作用。这种力量指向物体运动所围绕的圆心。它对于维持圆周运动是必不可少的，并且负责防止物体因惯性而飞离直线。如果没有centripetal force（向心力），物体将无法沿着曲线路径移动，而是会按照牛顿第一运动定律继续沿直线运动。为了说明这一概念，可以考虑一个简单的例子：一辆汽车在转弯。当汽车沿着弯道行驶时，轮胎对地面施加的力量提供了必要的centripetal force（向心力），以保持汽车在曲线路径上。如果路面湿滑或者汽车的速度超过某个极限，所需的centripetal force（向心力）可能无法满足，从而导致失去控制，可能会使汽车滑出道路。另一个经典的例子可以在行星围绕太阳运动中找到。太阳的引力作为centripetal force（向心力）保持行星在其椭圆轨道内。引力和行星的惯性之间的平衡使它们能够维持稳定的轨道。如果引力提供的centripetal force（向心力）突然消失，行星将沿着直线远离太阳，这再次表明这种力量在天体力学中的重要性。此外，centripetal force（向心力）并不仅限于大规模现象；它也可以在日常活动中观察到。例如，当用绳子摆动一个球体进行圆周运动时，绳子的张力提供了保持球体在圆周内运动所需的centripetal force（向心力）。如果绳子断裂，球体将沿切线飞出，再次展示了这种力量在维持圆周运动中的重要性。总之，centripetal force（向心力）的概念在物理学中是基础，特别是在圆周运动的研究中。它是使物体沿曲线路径运动的力量，无论是汽车转弯、行星绕恒星运动，还是简单的绳子和球体实验。理解centripetal force（向心力）不仅加深了我们对物理法则的理解，还增强了我们对宇宙复杂动态的欣赏。通过认识到这种力量的重要性，我们可以更好地理解自然和技术中的各种现象，为工程、天文学甚至体育科学等领域的进步铺平道路。