For a small satellite describing a circular orbit of radius around a planet of mass

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

Problem

For a small satellite describing a circular orbit of radius

r

around a planet of mass

M

, the orbital period

T

varies with

r

according to which of the following proportionalities? (a)

T\,\propto\,r^{2}

(b)

T\,\propto\,r^{3/2}

(c)

T\,\propto\,r

(d)

T\,\propto\,r^{1/2}