Physics

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}

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

T\,\propto\,r

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