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The Strength of a Gravitational Field.

The path which a small 'test' mass placed in a gravitational field is called a field line. It is a line of force directed radially towards the centre of the planet.The strength of a gravitational field - g - is the force per unit mass on a small test mass placed in the field.

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Specification: OCR Physics A (H556), A-level, 5.4.1 Point and spherical masses. Topic: Gravitational Fields.

Key terms in this lesson

capacitor
A component that stores electric charge, consisting of two conducting plates separated by an insulator, called a dielectric.

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