Which one of the following gives the correct vector expression for the gravitational…

PHYSICS · Single correct · AP · Physics C: Mechanics · Force and Translational Dynamics · Force and Translational Dynamics

Problem

Which one of the following gives the correct vector expression for the gravitational field intensity

\vec g

at a point situated at a distance

r

from an isolated point mass

M

? (a)

-2G\dfrac{M}{r^{2}}\,\hat r

(b)

-G\dfrac{M}{r^{2}}\,\hat r

(c)

G\dfrac{M}{r^{2}}\,\hat r

(d)

-G\dfrac{M}{r^{2}}\,\hat \theta