摘要
本文在不变换参考系的情况下考虑参考点变更而导出了角动量定理的一个新形式,并由此导出了做平面运动的刚体绕瞬心的转动定律,还对“瞬心”的可能含义进行了辨析。最后本文通过例题比较了角动量定理的各种形式的运用。
In this paper,a new form of angular theorem is deduced by considering the change of reference point without changing the reference frame.The rotation law of the rigid body around the instant center in plane motion is derived,and the meaning of“instant center”is discussed.Finally,various forms of angular momentum theorem are compared by examples.
作者
吴洵
黄亦斌
WU Xun;HUANG Yibin(Middle School of Poyang,Shangrao,Jiangxi 333100;Jiangxi Normal University,Nanchang,Jiangxi 330022)
出处
《物理与工程》
2020年第6期75-78,83,共5页
Physics and Engineering
关键词
角动量定理
参考点变更
瞬心
绕瞬心的转动定律
theorem of angular momentum
change of reference point
instant center
rotation law about instant center
