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Ako vypočítať Gravitational Potential Energy

Čo je Gravitational Potential Energy?

Gravitational potential energy (GPE) is the energy stored in an object due to its position in a gravitational field. GPE = mgh where m is mass (kg), g is gravitational acceleration (9.81 m/s²), and h is height above reference (m).

Sprievodca krok za krokom

  1. 1GPE = m × g × h
  2. 2g ≈ 9.81 m/s² at Earth's surface (9.80665 exactly at standard)
  3. 3GPE is relative to a reference height (often the ground or sea level)
  4. 4When an object falls, GPE converts to kinetic energy (KE = ½mv²)

Worked Examples

Vstup
5 kg object raised 10 m
Výsledok
GPE = 5 × 9.81 × 10 = 490.5 J
About half a kilojoule
Vstup
70 kg person on a 10-story building (30m)
Výsledok
GPE = 20,601 J ≈ 20.6 kJ

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