势能
物体因其位置（处于引力场或电场中）或其状态（如被拉伸或压缩的弹簧、作为化学反应物、或具有静质量）而具有的能量。
- 被拉伸弹簧的势能为 ——
\begin{align} \label{eq:13201a} PE = \small\frac{1}{2} \normalsize \, k \, u^2 \end{align}
其中 ——
| \( PE \) | = 势能 |
| \( k \) | = 弹簧刚度 |
| \( u \) | = 伸长量 |
- 电容器的势能为 ——
\begin{align} \label{eq:13202a} PE = \small\frac{1}{2} \normalsize \, (1/C) \, q^2 \end{align}
其中 ——
| \( PE \) | = 势能 |
| \( C \) | = 电容 |
| \( q \) | = 电荷量 |
另见 —
动能
储能
应变能
细长纵向谐振构件中储存的能量
Potential energy
The energy possessed by an object because of its position (in a gravitational or electric field), or its condition (as a stretched or compressed spring, as a chemical reactant, or by having rest mass).
- The potential energy of a stretched spring is —
\begin{align} \label{eq:13201a} PE = \small\frac{1}{2} \normalsize \, k \, u^2 \end{align}
where —
| \( PE \) | = potential energy |
| \( k \) | = spring stiffness |
| \( u \) | = stretch |
- The potential energy of a capacitor is —
\begin{align} \label{eq:13202a} PE = \small\frac{1}{2} \normalsize \, (1/C) \, q^2 \end{align}
where —
| \( PE \) | = potential energy |
| \( C \) | = capacitance |
| \( q \) | = charge |
Also see —
Kinetic energy
Stored energy
Strain energy
Energy stored in a thin longitudinally resonant member