Let $G, W, E$ and $S$ be the relative strengths of gravitational,weak-nuclear,electromagnetic,and strong-nuclear forces,respectively. Which of the following statements is correct?

The $SI$ unit of $\frac{G}{g}$ is $(g = \text{acceleration due to gravity}, G = \text{gravitational constant})$

The ratio of inertial mass and gravitational mass has been found to be $1$ for all material bodies. If this ratio were different for different bodies,what would be the consequence for two bodies having the same gravitational mass but different inertial masses?

$A$ mass $M$ is divided into two parts $xM$ and $(1 - x)M$. For a given separation,the value of $x$ for which the gravitational attraction between the two pieces becomes maximum is

Two identical solid copper spheres of radius $R$ are placed in contact with each other. The gravitational attraction between them is proportional to

Six point masses of mass $m$ each are at the vertices of a regular hexagon of side $l$. Calculate the net gravitational force on any one of the masses.