centripetal force

简明释义

向心力

英英释义

例句

1.When a car turns around a corner, the friction between the tires and the road provides the necessary centripetal force (向心力) to keep it moving in a circular path.

当一辆车在转弯时，轮胎与路面之间的摩擦力提供了必要的centripetal force (向心力)，使其沿着圆形路径行驶。

2.When you swing a ball on a string, the tension in the string provides the centripetal force (向心力) required for circular motion.

当你用绳子挥动一个球时，绳子的张力提供了圆周运动所需的centripetal force (向心力)。

3.In a roller coaster, the tracks exert a centripetal force (向心力) on the cars to keep them on the curved paths.

在过山车中，轨道对车辆施加centripetal force (向心力)，使其保持在曲线路径上。

4.The Earth orbits the Sun due to the gravitational centripetal force (向心力) that pulls it towards the Sun.

地球绕太阳运动是由于引力centripetal force (向心力)将其拉向太阳。

5.Satellites remain in orbit because of the centripetal force (向心力) provided by Earth's gravity.

卫星之所以能保持轨道，是因为地球引力提供的centripetal force (向心力)。

作文

Centripetal force is a fundamental concept in physics that plays a crucial role in the motion of objects in circular paths. When an object moves in a circle, it experiences a constant change in direction, which is made possible by a force directed towards the center of the circle. This force is what we refer to as centripetal force (向心力). Without this force, the object would not be able to maintain its circular motion and would instead move off in a straight line due to inertia.One of the most common examples of centripetal force (向心力) can be observed in the motion of planets around the sun. The gravitational pull exerted by the sun acts as the centripetal force (向心力) that keeps the planets in their orbits. Similarly, when a car makes a turn, the friction between the tires and the road provides the necessary centripetal force (向心力) to change the direction of the car. In both cases, the centripetal force (向心力) is essential for maintaining circular motion.It is important to note that centripetal force (向心力) is not a separate force on its own; rather, it is the net force resulting from other forces acting on the object. For instance, in the case of a satellite orbiting the Earth, the centripetal force (向心力) is provided by the gravitational attraction between the Earth and the satellite. The balance between this gravitational force and the satellite's inertia is what allows it to remain in orbit.The magnitude of centripetal force (向心力) can be calculated using the formula: F = mv²/r, where F is the centripetal force (向心力), m is the mass of the object, v is its velocity, and r is the radius of the circular path. This equation illustrates that the centripetal force (向心力) increases with the square of the object's speed and is inversely proportional to the radius of the circle. Therefore, if an object moves faster or if the radius of its path decreases, the required centripetal force (向心力) increases accordingly.Understanding centripetal force (向心力) is not only important in physics but also has practical applications in various fields such as engineering, astronomy, and even sports. For example, engineers must consider centripetal force (向心力) when designing roads and racetracks to ensure vehicles can safely navigate curves without skidding off. In sports, athletes utilize the principles of centripetal force (向心力) to enhance their performance in activities like cycling or skating, where maintaining balance and control during turns is critical.In conclusion, centripetal force (向心力) is a vital concept that helps us understand the dynamics of circular motion. Whether it is the planets orbiting the sun or a car navigating a curve, the presence of centripetal force (向心力) is essential for maintaining stability and direction. By grasping this concept, we can appreciate the intricate laws of motion that govern our universe and apply them to real-world situations.

向心力是物理学中的一个基本概念，在物体沿圆形路径运动中起着至关重要的作用。当一个物体在圆周上运动时，它会经历方向的持续变化，这种变化是由于指向圆心的力所导致的。这个力就是我们所称的向心力。没有这个力，物体将无法保持其圆周运动，而是由于惯性而沿直线运动。向心力的一个常见例子可以在行星围绕太阳运动中观察到。太阳施加的引力充当了向心力，使行星保持在其轨道上。类似地，当汽车转弯时，轮胎与路面之间的摩擦提供了必要的向心力，以改变汽车的方向。在这两种情况下，向心力对于维持圆周运动至关重要。重要的是要注意，向心力并不是独立的力；相反，它是作用于物体的其他力的合力。例如，在卫星绕地球轨道运动的情况下，向心力由地球和卫星之间的引力提供。这种引力与卫星的惯性之间的平衡使其能够保持轨道。向心力的大小可以使用公式F = mv²/r计算，其中F是向心力，m是物体的质量，v是其速度，r是圆形路径的半径。这个方程表明，向心力随着物体速度的平方增加，并与圆的半径成反比。因此，如果物体运动得更快或其路径的半径减小，则所需的向心力也会相应增加。理解向心力不仅在物理学中重要，而且在工程、天文学甚至体育等各个领域都有实际应用。例如，工程师在设计道路和赛道时必须考虑向心力，以确保车辆能够安全地通过弯道而不打滑。在体育中，运动员利用向心力的原理来提高他们在骑自行车或滑冰等活动中的表现，在这些活动中，保持在转弯期间的平衡和控制至关重要。总之，向心力是一个重要的概念，帮助我们理解圆周运动的动态。无论是行星围绕太阳运动，还是汽车在曲线行驶，向心力的存在对于保持稳定和方向至关重要。通过掌握这一概念，我们可以欣赏支配我们宇宙的复杂运动法则，并将其应用于现实世界的情况。