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【摘要】 在自然界中,大到天体间的相互作用,小到基本粒子间的相互作用,都遵守动量守恒定律,它是宏观世界和微观世界都遵守的共同规律,应用十分广泛,是自然界普遍适用的规律之一,因而是物理学的重要内容之一,要努力学习和应用动量守恒定律。
【关键词】 物理;动量宇恒定得;非力学应用;例证
[Abstract] in nature, as big as mutual function heavenly body between, as slightly as mutual function the fundamental particle between, all observes the law of conservation of momentum, it is the common rule which the macrocosm and the microcosm all observes, the application is extremely widespread, is one of nature universal suitable rules, thus is one of physics important contents, must diligently study and the application law of conservation of momentum.
[Key word] physics; The momentum space is constant; Non- mechanics application; Illustration
“一个系统不受外力或所受外力之和为零,这个系统的总动量保持不变”,这就是动量守恒定律。
动量守恒定律是物理学的重要规律之一,它不仅在力学范畴中有着重要的应用,在非力学范畴中也有重要的应用,兹举例如下:
例1在光滑绝缘的水平面上,有两个被束缚着的点电荷A和B,相距L。撤消束缚后它们均从静止开始运动。在开始的瞬间,A、B的加速度大小分别为a和4a;过了一段时间后(A、B未接触),A的加速度大小变为a,速度为V .问此刻A的加速度及速度多大?二者相距多远?
本文中所涉及到的图表、注解、公式等内容请以PDF格式阅读原文。
【关键词】 物理;动量宇恒定得;非力学应用;例证
[Abstract] in nature, as big as mutual function heavenly body between, as slightly as mutual function the fundamental particle between, all observes the law of conservation of momentum, it is the common rule which the macrocosm and the microcosm all observes, the application is extremely widespread, is one of nature universal suitable rules, thus is one of physics important contents, must diligently study and the application law of conservation of momentum.
[Key word] physics; The momentum space is constant; Non- mechanics application; Illustration
“一个系统不受外力或所受外力之和为零,这个系统的总动量保持不变”,这就是动量守恒定律。
动量守恒定律是物理学的重要规律之一,它不仅在力学范畴中有着重要的应用,在非力学范畴中也有重要的应用,兹举例如下:
例1在光滑绝缘的水平面上,有两个被束缚着的点电荷A和B,相距L。撤消束缚后它们均从静止开始运动。在开始的瞬间,A、B的加速度大小分别为a和4a;过了一段时间后(A、B未接触),A的加速度大小变为a,速度为V .问此刻A的加速度及速度多大?二者相距多远?
本文中所涉及到的图表、注解、公式等内容请以PDF格式阅读原文。