摘要
本文指出了用E=12kA2求振幅A时,必须选择谐振系统的平衡位置作为谐振系统所有势能的零点,否则利用该式求出的振幅是错误的.
In this paper,we noted that one must choose the zero point of potential energy to be the one at which the system is balanced in studying simple harmonic motion. Otherwise he could not get right amplitude from the formulaE=1/2kA^2.
出处
《物理与工程》
2005年第4期24-25,共2页
Physics and Engineering
