rolling motion

简明释义

滚动横摇

英英释义

例句

1.The skateboarder executed tricks while maintaining a constant rolling motion on the ramp.

滑板手在坡道上保持恒定的滚动运动，完成了各种花样。

2.The child pushed the toy car, and it moved forward with a steady rolling motion.

孩子推着玩具车，它以稳定的滚动运动向前移动。

3.During the physics experiment, we observed the rolling motion of the cylinder as it rolled across the table.

在物理实验中，我们观察到圆柱体在桌子上进行的滚动运动。

4.In gymnastics, the athlete performed a series of flips that included rolling motions on the mat.

在体操中，运动员在垫子上表演了一系列翻转，其中包括滚动运动。

5.The ball travels down the hill in a smooth rolling motion, which means it moves by turning over itself.

球以平滑的滚动运动沿着山坡下滑，这意味着它通过自身的转动移动。

作文

The concept of rolling motion refers to the movement of an object that rolls over a surface, as opposed to sliding or skidding. This type of motion is commonly observed in everyday life, such as when a ball is thrown or when a car travels down a hill. Understanding rolling motion is not only essential for physics but also for various engineering applications. For instance, engineers must consider the principles of rolling motion when designing wheels, tracks, and other mechanisms that involve rotation.When we analyze rolling motion, we find that it involves both translational and rotational aspects. Translational motion refers to the movement of the center of mass of the object, while rotational motion involves the spinning around an axis. A classic example of rolling motion can be seen in a wheel rolling down a slope. As the wheel rolls, its center of mass moves forward while the wheel itself rotates around its axle. This combination of movements allows for efficient transportation and energy transfer.One of the key factors that influence rolling motion is friction. Unlike sliding motion, where kinetic friction plays a significant role, rolling motion primarily involves static friction at the point of contact between the rolling object and the surface. This static friction is what enables the object to roll without slipping. If the surface is too slippery, such as ice, the object may not be able to maintain rolling motion and may instead slide.In addition to friction, the shape and material of the rolling object also affect its rolling motion. For example, a perfectly spherical ball will roll more efficiently than a flat object because it has a uniform distribution of mass and minimizes resistance. The material of the object can also impact how easily it rolls; rubber tires grip the road better than metal wheels, allowing for smoother rolling motion.Moreover, the conservation of energy plays a crucial role in rolling motion. When an object rolls down a hill, gravitational potential energy is converted into kinetic energy. This kinetic energy is divided into translational kinetic energy, which relates to the forward motion of the object, and rotational kinetic energy, which relates to the spinning of the object. Understanding this energy transformation is vital for engineers who design systems that rely on rolling motion.In conclusion, the study of rolling motion encompasses various physical principles that are fundamental to our understanding of movement. From the role of friction to the effects of shape and material, each aspect contributes to how objects move through space. Whether in nature or in engineered systems, rolling motion remains a critical area of study that impacts our daily lives. By grasping these concepts, we can better appreciate the mechanics behind everything from a simple ball to complex machinery that relies on the efficiency of rolling motion.

“滚动运动”这一概念指的是物体在表面上滚动的运动，而不是滑动或打滑。这种运动在日常生活中很常见，例如当球被投掷时或者汽车沿着坡道行驶时。理解“滚动运动”不仅对物理学至关重要，而且对各种工程应用也非常重要。例如，工程师在设计轮子、轨道和其他涉及旋转的机制时，必须考虑“滚动运动”的原理。当我们分析“滚动运动”时，会发现它涉及到平移和旋转两个方面。平移运动是指物体质心的运动，而旋转运动则涉及围绕轴的旋转。一个经典的“滚动运动”例子可以在轮子沿斜坡滚动时看到。当轮子滚动时，它的质心向前移动，同时轮子本身围绕其轴旋转。这种运动的组合使得高效的运输和能量转移成为可能。影响“滚动运动”的关键因素之一是摩擦力。与滑动运动不同，在滑动运动中，动摩擦力起着重要作用，而“滚动运动”主要涉及接触点之间的静摩擦力。这个静摩擦力使物体能够在不打滑的情况下滚动。如果表面过于光滑，例如冰面，物体可能无法保持“滚动运动”，而是会滑动。除了摩擦力之外，滚动物体的形状和材料也会影响其“滚动运动”。例如，完美的球形物体比平坦物体滚动更有效，因为它具有均匀的质量分布并最小化阻力。物体的材料也会影响其滚动的容易程度；橡胶轮胎比金属轮子更好地抓住路面，从而允许更顺畅的“滚动运动”。此外，能量守恒在“滚动运动”中起着至关重要的作用。当物体沿着坡道滚下时，重力势能转化为动能。这种动能分为平移动能，与物体的前进运动相关，以及旋转动能，与物体的旋转相关。理解这种能量转化对于设计依赖于“滚动运动”的系统的工程师来说至关重要。总之，“滚动运动”的研究涵盖了多种物理原理，这些原理是我们理解运动的基础。从摩擦力的作用到形状和材料的影响，每个方面都对物体如何在空间中移动产生影响。无论是在自然界还是在工程系统中，“滚动运动”仍然是一个关键的研究领域，影响着我们的日常生活。通过掌握这些概念，我们可以更好地欣赏从简单的球体到依赖于“滚动运动”效率的复杂机械背后的力学。