对于一个运动过程,列出牛顿第二定律,动量守恒,能量守恒,角动量守恒等守恒关系中,那几个式子是独立的?

这几个式子中有能由其他几个式子推出来的式子吗?
2024-11-16 04:15:47
推荐回答(3个)
回答(1):

都是独立的式子呀,都有各自的等量关系的。只是使用情况不同
牛顿第二定律:主要是力合运动的关系 F=MA
动量守恒:质量合速度的关系 I=MV
能量守恒:能量之间的转化 大多以重力势能转化为动能长见 E=0.5MV^
角动量守恒:动量守恒的一个部分,或者说一种特例

回答(2):

这几个基本上都是相对独立的,但都是可以互推互化的,就像p·~2=2Ek·v ,Ek=1/2pv。动量守恒就是由牛顿定律推出来的,角动量守恒定律相对独立一点。

回答(3):

牛二可以推出动量,但是动量适用范围更广

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