Question

Newton’s law of gravitation is called the universal law of gravitation because:
A. it is always valid for forces of attraction
B. it is applicable to all particles and members of the solar family
C. it is applicable for all masses at all distances, independent of the medium
D. None of these

Answer 1

The symbol $G$ is Newton's universal law of gravitation in which the gravitational field between two objects is directly proportional to the mass of each object and inversely proportional to the square of the distance between them.

Complete answer:
We know that,
$Fg = G\dfrac{{m_1\,m_2}}{{{d^2}}}$
Where, $Fg$ is the gravitational force between two bodies, $G$ is the gravitational constant, $m_1,m_2$ are the masses of two bodies and $d$ is the distance between the two bodies.

Newton’s law of gravitation states that every particle attracts every other particle present in the universe with a force known as gravitational force which is directly proportional to the mass of each body and inversely proportional to the distance between the two bodies from thro center.

The symbol G is Newton's universal law and it is called so because it is applicable on all the bodies present in this universe having some mass and the bodies are governed by the same law. This constant is applicable to all types of medium. Thus from the above discussion we conclude that it is applicable universally for all masses at all distances and it also does not depend on medium.

Therefore the correct option is C.

Note: There are several importance of Universal law so gravitation Remember that the gravitational force of earth ties the terrestrial objects to the earth and also the formation of ties in the ocean is due to the force of attraction between the moon and ocean water.