This definitions covers Key Definitions within Gravitational Potential Energy for GCSE Physics. Revise Gravitational Potential Energy in Energy for GCSE Physics with 15 exam-style questions and 6 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 10 of 16 in this topic. Make sure you can use the exact wording confidently, because definition marks are often lost through vague language.
📖 Key Definitions
Gravitational potential energy (GPE): Energy stored in an object due to its position in a gravitational field. E_p = mgh. Units: Joules (J).
Gravitational field strength (g): The force of gravity on each kilogram of mass. On Earth, g = 10 N/kg. Units: N/kg.
Height (h): The vertical distance above a reference point. Must be measured vertically, not along a slope. Units: metres (m).
Conservation of energy: In a closed system with no friction, GPE lost = KE gained (and vice versa). The total mechanical energy is constant.
Practice questions for Gravitational Potential Energy
What is the value of gravitational field strength (g) on Earth?
Explain how gravitational potential energy is related to an object's mass and height. Refer to the equation Ep = mgh in your answer.