用单摆测量重力加速度的大小
【实验目的】 利用单摆测量当地的重力加速度. 正确熟练地使用停表. 【实验原理】 单摆在摆角很小时的摆动可以看成是简谐运动. 其固有周期 $T=2\pi\sqrt{\frac{m}{v}}$ 由此可得 $g=\frac{4\pi^2 l}{T^2}$
A brief history of classical mechanics
发表于：
分类于：
作业
Nearly all middle school students seemed to have learned classical mechanics in their schools. What is classical mechanics? “Classical mechanics is the study of the motion of bodies under the action of physical forces. As is true for any physical model, classical mechanics is an approximation and has its limits - it breaks down at small scales, high speeds, and large
Newton's contribution to classical mechanics
发表于：
分类于：
作业
Abstract Isaac Newton (1642-1727) was a well-known physicist and mathematician who made great contributions to natural science. His great work Mathematical Principles of Natural Philosophy is an important part of classical mechanics theory and an important milestone in the history of human development. This paper discusses his contribution to classical mechanics from Newton’s law of motion and the universal law of gravitation. Key Words Newton, Classical mechanics, Newton’s law of
A comparison of taking notes on paper and laptops
发表于：
分类于：
作业
Taking notes is what every student does in class. There are many ways to take notes. Taking notes on paper and laptops are two fashionable ways to take notes. Some people would think that these two ways are similar and there are not particularly large differences between taking notes on paper and laptops. However, there are some large differences between those two ways in intellectual advantage, flexibility, and motivation. The
《共产党宣言》读后感
发表于：
分类于：
作业
在这个寒假，我不光阅读了学校要求阅读的两本书，还在空闲时间阅读了《共产党宣言》（以下简称为《宣言》）。这是一部富有斗争精神、批判精神和革命精
牛顿对经典力学的贡献
发表于：
分类于：
作业
【摘要】 艾萨克·牛顿（1642-1727）是一位家喻户晓的物理学家和数学家，为自然科学做了巨大的贡献。他的巨著《自然哲学的数学原理》是经典力
《命若琴弦》读书笔记
发表于：
分类于：
作业
“命若琴弦”是一个比喻，意思是人的命运就像一根琴弦，唯有拉紧了，才能弹奏出悦耳的曲子。这个比喻来自于史铁生的散文集《命若琴弦》。这个比喻告诉
《故都的秋》读书笔记
发表于：
分类于：
作业
《故都的秋》是中国现代著名小说家、散文家、诗人、革命烈士郁达夫于1934年8月创作的散文。这篇文章描述了北国的秋天，以及作者对于北国秋天的感