Gravitation Potential Energy - GCSE P4

Revision material for the basics on Gravitational Potential Energy in the OCR 21st Century Science Physics course.

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  • Created by: cg97
  • Created on: 27-11-12 14:44
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  • Gravitational Potential Energy (GPE)
    • How is GPE increased?
      • If you lift an object up, it's GPE increases as it's raised
        • As an object falls, it's GPE decreases
      • You increase GPE by doing work
      • The increase in the GPE is equal to the work done by the lifting force in order to raise its height
    • Gravitation Potential Energy is the energy stored in an object when you riase it to a height against the force of gravity
    • Change in GPE (J) = Weight (N) x Verticxal Height Difference (m)
      • For example: An object weighing 4,000N is propelled 10 metres into the air. What is it's change in GPE?
        • 4,000 x 10 = 40,000 J or   40 kJ
    • Falling  objects convert GPE into KE (Kinetic Energy)
      • KE Gained = GPE lost
        • The further something falls, the quicker it will go
          • Falling  objects convert GPE into KE (Kinetic Energy)
            • KE Gained = GPE lost
              • The further something falls, the quicker it will go

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