Which one of the following expressions represents the gravitational potential energy…

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

Problem

Which one of the following expressions represents the gravitational potential energy

U

of a mass

m

located at a distance

r

from the centre of Earth of mass

M

? (Here

G

is the universal gravitational constant.) (a)

+\,\dfrac{G M m}{r}

(b)

-\,\dfrac{G M m}{r}

(c)

-\,\dfrac{1}{2}\,\dfrac{G M m}{r}

(d)

-\,m g r