Question

Two-point objects with different masses are kept at a distance $R$ apart from each other. If the gravitational force between them is $F$, then which of the following relation is correct?

• A. $F\propto R^2$
• B. $F\propto R^4$
• C. $F\propto \frac{1}{R^2}$
  
• D. $F\propto R$

Answer 1

The correct option is C $F\propto \frac{1}{R^2}$


According to the universal law of gravitation, the gravitational force of attraction between two bodies is directly proportional to product of their masses and is inversely proportional to the square of the distance between them, i.e.
$F=\frac{GMm}{R^2}$
where, G: Gravitational constant