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Work and Kinetic Energy

Potential Energy Examples in Everyday Physics

Description

Potential energy is stored energy, and it appears in several everyday forms. It is also called energy at rest because it is ready to be used later. In physics, different systems can store energy in different ways.

Gravitational potential energy is the energy stored by an object because of its pos...

Transcript

势能的不同形式包括重力势能、电势能、化学势能、核势能和弹性势能。

重力势能是最明显的势能形式,它取决于物体在重力场作用下所处的相对位置。例如,放在桌子上方的书就具有储存的重力势能。

电势能来源于电荷之间的相互吸引或排斥,例如电路中电容器内部储存的能量就以电势能的形式存在。

化学势能是储存在分子中的能量。例如,干木材储存有化学势能,当木材燃烧时,这种能量会被释放并转化为其他形式的能量。

核势能来源于原子核,而弹性势能是由于物体的构型所储存的能量,例如被拉伸的弹弓。

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