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Gravitational fields (A-level only)

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Question 35

A deep-space probe measures the gravitational potential at the surface of a homogeneous, spherical exoplanet, Astraea-X, to be $- U$ .

A second homogeneous, spherical exoplanet, Astraea-Y, is discovered with 0.8 times the density and 2.5 times the radius of Astraea-X.

What is the gravitational potential at the surface of Astraea-Y?

$- 2 U$

$- 4 U$

$- 5 U$

$- 10 U$

Markscheme

Gravitational fields (A-level only) Questions

A Level
Physics
Gravitational fields (A-level only)

52 exam-style questions on AQA A Level Physics Gravitational fields (A-level only), covering Newton's law (A-level only), Gravitational field strength (A-level only), Gravitational potential (A-level only), and Orbits of planets and satellites (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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