潜在能源计算器
重力PE=毫克h——任何星球能量、质量或高度的溶解。
输入结果时更新 。
关于此计算器
Gravitational potential energy is the energy an object stores by virtue of its height in a gravitational field: PE = m × g × h, in joules, where m is mass in kilograms, g is the gravitational acceleration and h is the height it is raised. On Earth g is the standard 9.80665 m/s²; under advanced options you can switch to the Moon (1.62), Mars (3.72), Jupiter (24.79) and other bodies to see how the same lift stores very different amounts of energy. Choose which quantity to solve for — energy, mass or height — and the tool also reports the free-fall impact speed from that height, v = √(2gh).
As a worked example, lifting a 2 kg mass 10 m on Earth stores PE = 2 × 9.80665 × 10 ≈ 196 joules. Let it fall back and, ignoring air resistance, all of that converts to kinetic energy, so it lands at v = √(2 × 9.80665 × 10) ≈ 14 m/s. Take the identical lift to the Moon and only about 32 J is stored, because lunar gravity is roughly one-sixth of Earth’s.
Potential energy is measured relative to a chosen reference level — usually the ground — so only differences in height carry physical meaning. The concept underlies hydroelectric dams, pumped storage, pendulums, roller coasters and any situation where raising a mass banks energy that can later be released, and it pairs directly with kinetic energy through conservation of energy as objects rise and fall.
经常问到的问题
什么是引力潜在能量?
能量是物体通过受重力(PE = m × g × h)产生的能量增益。 A 2公斤质量在地球仓库2× 9.80665× 10 196焦耳上提升10米。
潜在的能量是否取决于参考高度?
是。 平均平均分比选定的零水平,通常是地面,只有两点高度的差异才具有实际意义。
其它行星的引力如何改变结果?
木星上的同一起重货商店(g ++ 24.8)比木星上的更高,月球上的起重货要少得多(g + + 1.62),将地球上约196 J的2千克质量10米的仓库提升到约2千克,但月球上只有32焦。
自由降级撞击速度是如何计算的?
从高处下降,所有潜在能量都变成动能, 所以 1⁄2mv2 = mgh give v = ( 2gh) = ( 2gh) = ( ), 与质量无关。 从地球上大约14 m/s 的10 m, 计算器显示在能量旁边。
潜在的能源与动能有何关系?
地球的能量会随着物体的落下而转化为动能,而总能量(抑制空气抵抗)则保持不变。 节能就是撞击速度仅取决于跌落高度而不是质量的原因。
质量和重量有什么区别?
公式使用质量(公斤);重量(重力)为m × g, 已经通过 g 术语被烤成PE = mgh 表达式,所以您进入质量,而不是重量。
API - 使用代码中的计算器
将此计算器称为自由 JSON 端点 。 不需要按键 。 将字段值发送到下面作为查询参数或 JSON 。 任何您省略的, 都会使用相同的默认值, 此页面预填的默认值是预填的; 未知参数是 400, 而不是静音零 。 读取 API 全部文件 →
终点
GET https://calculator.free/api/v1/potential-energy/curl
curl "https://calculator.free/api/v1/potential-energy/?solve=energy&mass=2&height=10"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/potential-energy/?" + new URLSearchParams({
"solve": "energy",
"mass": "2",
"height": "10"
}));
const data = await r.json();
console.log(data.results);成果仅是一般指导的估计数,而不是财务、医疗或税务咨询。