Physics

Problem

Which of the following gives the acceleration due to gravity

g

at Earth’s surface in terms of universal gravitational constant

G

, Earth’s mass

M

and radius

R

? a)

\dfrac{2GM}{R^{2}}

\dfrac{G(M+m)}{R^{2}}

\dfrac{GM}{R^{2}}

\dfrac{GM}{2R^{2}}