Mechanical Energy Conservation

Core Sentence / 核心句

Mechanical energy is conserved when the chosen system has no unaccounted nonconservative energy transfer across its boundary.

\qquad K_i+U_i=K_f+U_f$$ 中文理解：总能量始终守恒，但机械能守恒有条件；摩擦可能把机械能转为 thermal/internal energy。 ## Watch Out / 易错点 先画 [[System Boundary]]；不要同时把同一 conservative interaction 写成 work 和 $\Delta U$。 ## Mentioned In / 出现位置 - [[AP物理C力学第6次正课-功功率势能与机械能守恒#8. Mechanical Energy Conservation / 机械能守恒|第6次正课 · conservation]] - [[AP物理C力学第7次正课-能量综合势能曲线与动量入门#4. Loop-the-Loop / 竖直圆环综合|第7次正课 · loop application]] ## Connected Notes / 连接 - [[Work-Energy Theorem]] - [[Conservative Forces and Potential Energy]] - [[Potential Energy Curves]]