Q. The acceleration of a body due to the attraction of the earth (radius $R$) at a distance $2R$ from the surface of the earth is ($g$ = acceleration due to gravity at the surface of the earth)
A) $\frac{g}{9}$
B) $\frac{g}{3}$
C) $\frac{g}{4}$
D) $g$
Explanation
(a) $g^{'} = g\left( \frac{R}{R + h} \right)^{2} = g\left( \frac{R}{R + 2R} \right)^{2} = \frac{g}{9}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.