Learning objective

Calculate gravitational potential energy gained by an object raised above ground level.

Read the explanation, check the common trap, then practise with flashcards and questions.

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At a glance

Flashcards

Questions

Topic

Energy changes in a system, and the ways energy is stored before and after such changes

Subtopic

Changes in energy

AQA GCSE PhysicsEnergy

Study support

Understand this objective

Short explanation

Calculate gravitational potential energy gained by an object raised above ground level. sits inside the Changes in energy subtopic of Energy changes in a system, and the ways energy is stored before and after such changes for AQA GCSE Physics Energy. To revise it well, start by naming the relevant energy store, transfer pathway, equation or resource idea, then explain how the quantities connect in the question. Use precise Physics vocabulary from this objective, including gravitational potential energy, and keep closely related ideas distinct: energy is stored or transferred, power is the rate of transfer, and efficiency compares useful output with total input. In exam answers, state the principle first, substitute values only when needed, include units, and finish with a conclusion that links back to Changes in energy.

Key concepts

gravitational potential energyheight

Why it matters

This objective helps connect Changes in energy to exam-style questions, flashcards, and revision notes for Energy changes in a system, and the ways energy is stored before and after such changes.

Common mistakes

1 linked

Confusing gravitational field strength with acceleration due to gravity: Remind students that the gravitational field strength (g) is the force per unit mass and has units of N kg⁻¹ (or m s⁻²). In the formula Ep = m g h, g is the field strength, so it must be supplied or calculated from the local value of g. If the problem states the field strength directly, use that value; if it only gives the acceleration due to gravity, treat it as the field strength for the calculation. Always keep the units consistent: m (kg) × g (N kg⁻¹) × h (m) = J.

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