1.

Define G (universal gravitational constant).

Answer»

Solution :`F=G=(m_(1)m_(2))/(r^(2)) THEREFORE G=(Fr^(2))/(m_(1)m_(2))`.
If we TAKEN `m_(1)=m_(2)="unit"` mass and r = unit distance, numerically, G = F , i.e., G (universal gravitational constant) REPRESENTS the magnitude of the gravitational force of attraction between two unit masses, separated by a unit distance.


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