Question

The mass of Earth is represented by M and that of the Moon is represented by 2m. The distance between them is 2d. Which of the following expressions accurately represents the gravitational force acting between them?

• A. $2m\times 9.8$
• B. None of the above
• C. $M\times 9.8$
• D. $m\times 9.8$

Answer 1

The correct option is B None of the above

The value of acceleration due to the gravity of Earth is 9.8 m/s${}^2$ but only near its surface. At a further distance from the surface, it is proportional to $\frac{1}{distanc{e}^2}$