Four points are defined relative to Earth’s surface (radius ): A: on the surface B:…

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Four points are defined relative to Earth’s surface (radius

6400\,\text{km}

): A: on the surface B: at an altitude of

480\,\text{km}

C: at a depth of

480\,\text{km}

D: at an altitude of

960\,\text{km}

Which option gives the correct order of the magnitudes of acceleration due to gravity at these points, from greatest to least? (a)

C > A > B > D

(b)

A > C > B > D

(c)

A > B > C > D

(d)

C > B > A > D