CalcCalculadora de Energia Potencial
Última atualização: 2026-05-09
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| Massa (kg) (kg) | Altura (m) | gravedad (m/s2) | |
|---|---|---|---|
| Escala laboratorio | 4.0 kg | 4.0 m | 3.92 m/s2 |
| Uso domestico | 7.0 kg | 7.0 m | 6.87 m/s2 |
| Aplicacion industrial | 10.0 kg | 10.0 m | 9.81 m/s2 |
| Ingenieria civil | 15.0 kg | 15.0 m | 14.71 m/s2 |
| Escala cientifica | 25.0 kg | 25.0 m | 24.53 m/s2 |
Gravitational Potential Energy Calculator
Gravitational potential energy is the energy stored in an object due to its position in a gravitational field. This calculator determines it from mass, height and gravitational acceleration.
Potential energy formula
Gravitational potential energy is computed as:
PE = m × g × h
Where m is mass in kg, g is gravitational acceleration (9.81 m/s² on Earth) and h is height in meters. The result is expressed in joules (J).
Example 1: elevated object
Problem: A 10 kg object at 15 m height.
- Calculation:
- PE = 10 × 9.81 × 15 = 1,471.5 J.
Answer: PE = 1,471.5 J.
Example 2: hydroelectric dam
Problem: 1,000 kg of water at 50 m height.
- Calculation:
- PE = 1,000 × 9.81 × 50 = 490,500 J = 490.5 kJ.
Answer: PE = 490,500 J (490.5 kJ).
Usos comuns
- Computing stored energy in hydroelectric dams.
- Analyzing energy of objects in free fall.
- Designing pumped storage systems.
- Studying energy conservation in physics.
- Computing work required to lift loads.
- Evaluating potential energy in roller coasters and extreme sports.
Common mistakes with potential energy
- Using centimeters instead of meters for height.
- Not using the correct value of g for the location (varies slightly with latitude).
- Confusing potential energy with kinetic energy.
- Not considering that height is measured from a reference point.
Dica profissional
Potential energy converts to kinetic energy when the object falls. In the absence of friction, PE_initial = KE_final. This energy conservation is fundamental for solving mechanics problems.
On Earth it varies slightly: 9.78 m/s² at the equator and 9.83 m/s² at the poles. 9.81 is the standard average value.
From a reference point you choose (normally the ground). What matters is the height difference, not the absolute height.
Lunar gravity is 1.62 m/s², approximately 1/6 of Earth's. An object has 6 times less potential energy on the Moon.
Yes, if the object is below the chosen reference point. This is common in well or mine problems.