Question

Which statements correctly describe the effect of distance in determining the gravitational force and the electrical force? Check all that apply.



The gravitational force has an infinite reach.


The electrical force has an infinite reach.


The gravitational force is inversely proportional to the distance.


The electrical force is inversely proportional to the distance.


The gravitational force is inversely proportional to the square of the distance.


The electrical force is inversely proportional to the square of the distance.

Answer 1

The following statements are correct for the electrical (Coulomb) and gravitational forces. The electrical force is inversely proportional to the square of the distance. The gravitational force is also inversely proportional to the square of the distance. Gravitational forces will scale with the amount of mass whilst electrical forces scale with the amount of charge. 

Answer 2

Distance (r) is the measurement of the centre of masses located apart. The distance affects the gravitational force and the electrical force in inverse proportion.

What is gravitational force?

According to Newton's Universal law of gravity, the gravitational force is directly proportional to the product of masses and indirectly proportional to the square of the distance between them.

$\rm F=G{\frac{m_1m_2}{r^2}}$

Where, $\rm F$ = force, $\rm C$ = gravitational constant, $\rm m$ = mass of object 1, $\rm M$= mass of object 2, $\rm r$ = distance between centers of the masses

According to Coulomb's law, the electric force is directly proportional to the product of charges and indirectly proportional to the square of the distance between them.

Therefore, option C. the gravitational force and option D. the electric force are indirectly proportional to the square of the distances.

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