Which expression gives the magnitude of the gravitational field strength produced by…

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

Problem

Which expression gives the magnitude of the gravitational field strength produced by an isolated point mass

M

at a distance

r

from its center? (a)

\displaystyle \frac{2GM}{r^{2}}

(b)

\displaystyle \frac{GM}{2r^{2}}

(c)

\displaystyle \frac{GM}{r^{2}}

(d)

\displaystyle 4\pi\,\frac{GM}{r^{2}}