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2020年12月22日 · Gravitational potential energy (GPE) is an important physical concept that describes the energy something possesses due to its position in a gravitational field. The GPE formula GPE = mgh shows that it depends on the mass of the object, the acceleration due to gravity and the height of the object.
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Common types of potential energy include the gravitational potential energy of an object, the elastic potential energy of an extended spring, and the electric potential energy of an electric charge in an electric field. The unit for energy in the International System of Units (SI) is the joule (symbol J).
- PE, U, or V
- joule (J)
重力 势能 (gravitational potential energy)是物体因为重力作用而拥有的能量。 物体在空间某点处的重力势能等于使物体从该点运动到 参考点 （即一特定 水平面 ）时重力所作的功。 重力势能的公式：Ep=mgh 。 中文名. 重力势能. 外文名. Gravitational potential energy. 表达式. Ep=mgh. 提出者. 科里奥利 （Coriolis） 提出时间. 1829年. 适用领域. 物理. 应用学科. 物理学. 目录. 1 基本含义. 决定因素. 公式. 特点. 2 势能. 定义. 类别. 性质. 基本含义. 播报. 编辑. 势能：势能是相互作用的物体凭借其相对位置而具有的能量。
2022年2月20日 · The change in gravitational potential energy \(\Delta PE_g\), is \(\Delta PE_g = mgh\), with \(h\) being the increase in height and \(g\) the acceleration due to gravity. The gravitational potential energy of an object near Earth’s surface is due to its position in the mass-Earth system.
Potential energy is energy that has the potential to become another form of energy. An object’s potential energy depends on its physical properties and position in a system. Potential energy comes in many forms, such as:
- yes, so say there are two cars going the same speed, one is heavier than the other, you might think they have the same kinetic energy. But the larg...
- We mainly use gravitational potential energy every day.
- Potential energy is just the potential of kinetic energy in a given force. When two positively charged objects get further away from each other, th...
- V stands for VELOCITY
- potential energy(P.E) P.E=mgh m=mass g=gravitational acceleration h=height
- Potential energy is equal to zero only if it is on the surface of the Earth. This means that no other object exerts a force on it to counteract gra...
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位能 （英語： Potential Energy ），亦稱 勢能 ，是儲存於一 物理 系統內的一種 能量 ，是一個用來描述物體在保守力場中 作功 能力大小的 物理量 。 保守力 作 功 與路徑無關，故可定義一個僅與位置有關的 函數 ，使得保守力沿任意路徑所作的功，可表達為這兩點 函數值 的差，這個函數便是位能。 從物理意義上來說，位能表示物體在特定位置上所儲存的能量，描述 作功 能力的大小。 在適當的情況下，位能可以轉化為例如 動能 、 內能 等其他能量。 位能 [ 編輯] 位能的保守力定義 [ 編輯] 主條目： 保守力（重力 彈力 電力. 如果分別作用於兩個質點上的 作用力與反作用力 作功與具體路徑無關，只取決於交互作用質點初末位置，那麼這樣的一對力就叫作 保守力 。
The equation for change in potential energy states that ΔPE g = mgh ΔPE g = mgh. Since h h is negative in this case, we will rewrite this as ΔPE g = − mg ∣ h ∣ ΔPE g = − mg ∣ h ∣ to show the minus sign clearly.
