Chapter 4: Gravitational Fields, Satellites and Potentials

A-level PhysicsModule 5: Newtonian World & Astrophysics8 topicsHigher

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Releases 1 August 2026

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Module 5: Newtonian World and Astrophysics: Gravitational Fields, Satellites and Potentials - Authored Long Answer Questions

Examiner-style long-answer practice with automatic marking, improvement advice and ProofCoach tracking.

4 questions25 marks37.5 min

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6 marksdescribestandardOCR A

For Gravitational Fields, Satellites and Potentials, describe how gravitational field strength and potential applies to low Earth orbit satellite.

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6 markscalculatehardOCR A

Using low Earth orbit satellite, calculate a relevant OCR A Gravitational Fields, Satellites and Potentials quantity and explain the physical or chemical meaning of the answer. Show equation, substitution, answer and unit.

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7 marksexplainhardOCR A

Gravitational Fields, Satellites and Potentials - data from: low Earth orbit satellite

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Gravitational field strength g decreases with the square of distance from Earth's centre. At the surface (r = 6.4 x 10^6 m), g is about 9.81 N kg-1.

The graph for Gravitational Fields, Satellites and Potentials shows data from low Earth orbit satellite. Explain the pattern using the data and relevant physics principles.

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6 marksevaluatestandardOCR A

In low Earth orbit satellite, evaluate the experimental method or model assumptions used when applying gravitational field strength and potential.

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Key learning objectives

Understand the key principles behind Gravitational Fields, Satellites and Potentials.
Apply these ideas to exam-style questions.
Recall the essential definitions and key terms.